Overview of YONGNUO YN85mm F1.8 (for Canon EF)

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YONGNUO YN85mm F1.8 (for Canon EF)

YONGNUO YN85mm F1.8 (for Canon EF)

Navigation

  1. In short
  2. History
  3. Differences from the version for Nikon
  4. All lenses from Yongnuo
  5. Main Specifications
  6. Appearance
  7. Assembly
  8. Focusing
  9. Image quality
  10. Sample photos (full frame, crop)
  11. Differences from Canon 85 / 1.8 USM
  12. All autofocus 85s
  13. Price
  14. My experience
  15. Video review
  16. Results
  17. User Comments
  18. Add your review or question on the lens

The lens YONGNUO YN85mm F1.8 (model YN85mm F1.8) will be abbreviated as 'Yongnuo 85 / 1.8' in the review. Important: on Radozhiv there is already a review of the version Yongnuo 85 mm 1: 1.8N for Nikon cameras, but the Canon version has a number of differences, described in the section below.

YONGNUO YN85mm F1.8 (for Canon EF)

YONGNUO YN85mm F1.8 (for Canon EF)

In short

Yongnuo 85 / 1.8 is an inexpensive short telephoto lens with a fixed focal length and a large aperture for Canon EOS SLR cameras.

In general, Yongnuo 85 / 1.8 is a replacement for the original Canon LENS EF 85mm 1: 1.8 USM from which his appearance was copied. But the original lens is still better... Also, the Yongnuo 85 / 1.8 is designed to compete with the inexpensive autofocus solution from Meike - 85mm 1: 1.8 AF (Canon EF mount).

In its parameters, the Yongnuo 85 / 1.8 is a very attractive lens for amateur photographers as an inexpensive creative lens, primarily intended for portraiture.

YONGNUO YN85mm F1.8 (for Canon EF)

YONGNUO YN85mm F1.8 (for Canon EF)

History

YONGNUO YN85mm F1.8 (model YN85mm F1.8) for Canon EOS cameras was announced in February 2017 of the year. FROM October 2018 a new subversion is released that is cured of focus problems in Live View with some Canon cameras, as well as improved performance with adapters Canon EF-EOS M. The new version is no longer fundamentally different. Most likely, the review shows me an updated version, since it was made in December 2018. Lenses are found in different boxes: white and black and gold.

Two years later, in May 2019 the lens appeared on the official website YONGNUO YN85mm F1.8 (model YN85mm F1.8N) for Nikon SLR cameras.

Let me remind you that the first lens from Yongnuo Digital was a fifty dollars for Canon EOS cameras - Yongnuo Lens EF 50mm 1: 1.8 (YN50mm F1.8) submitted on December 27, 2014.

Differences from the version for Nikon

Differences between the Yongnuo version for Canon and Nikon (Yongnuo 85 mm 1: 1.8N) turned out to be quite a lot:

  1. for Canon there is no backlash focus ring
  2. for Canon microprocessor contacts gold plated
  3. Canon with auto focus is much less trouble
  4. for Canon there is no notch from the aperture on f / 1.8
  5. for Canon the case is matte without a characteristic rough coating inherent in some Nikon lenses
  6. for Canon notches below 'Yongnuo Digital'
  7. for Canon, the focus ring direction matches the original Canon lenses
  8. but for Canon, the focus ring rotates more tightly
  9. for Canon, the aperture only closes to F / 19
  10. the version for Canon much less trouble when shooting in backlight and side light
  11. the version for Canon will be installed without problems on any Canon central control gear (the version for Nikon had an unusual embarrassment with this)

In general, the version for Canon was more successful.

YONGNUO YN85mm F1.8 (for Canon EF)

YONGNUO YN85mm F1.8 (for Canon EF)


All Yongnuo Lenses

Bayonet mount Sony FE (mirrorless full frame):

  1. Yongnuo 35 mm 1: 2 DF DSM S [review]
  2. Yongnuo 50 mm 1: 1.8 DF DSM S [announce]
  3. Yongnuo 85 mm 1: 1.8 DF DSM S [review]

Bayonet mount Sony E (mirrorless APS-C):

  1. Yongnuo 50 mm 1: 1.8 DA DSM S [review]

Bayonet mount Canon RF (mirrorless full frame):

  1. Yongnuo 35 mm 1: 2 DF DSM R [review]
  2. Yongnuo 85 mm 1: 1.8 DF DSM R [review]

Bayonet mount Nikon Z (mirrorless full frame):

  1. Yongnuo 50 mm 1:1.8 DF DSM Z [announcement]
  2. Yongnuo 85 mm 1:1.8 DF DSM Z [announcement]

For the system Micro 4 / 3:

  1. Yongnuo 25 mm 1: 1.7 [review]
  2. Yongnuo 42.5 mm 1: 1.7 [review]
  3. Yongnuo 42.5 mm 1:1.7 II [overview]

Bayonet mount Nikon f (mirrored full frame):

  1. Yongnuo 14 mm 1: 2.8 [overview]
  2. Yongnuo 35 mm 1: 2 [overview]
  3. Yongnuo 40 mm 1: 2.8 [overview]
  4. Yongnuo 50 mm 1: 1.8 [review]
  5. Yongnuo 50 mm 1: 1.4 E [overview]
  6. Yongnuo 60 mm 1:2 MACRO MF [overview]
  7. Yongnuo 85 mm 1: 1.8 [overview]
  8. Yongnuo 100 mm 1: 2 [overview]

Bayonet mount Canon EF (mirrored full frame):

  1. Yongnuo 14 mm 1: 2.8 [aliexpres]
  2. Yongnuo 35 mm 1: 2 [review]
  3. Yongnuo 35 mm 1: 1.4 [overview]
  4. Yongnuo 35 mm 1: 1.4C DF UWM [announce]
  5. Yongnuo 50 mm 1: 1.8 [overview]
  6. Yongnuo 50 mm 1:1.8 II [overview]
  7. Yongnuo 50 mm 1: 1.4 [overview]
  8. Yongnuo 60 mm 1:2 MACRO MF [aliexpress]
  9. Yongnuo 85 mm 1: 1.8 [review]
  10. Yongnuo 100 mm 1: 2 [review]

Lenses and cameras and many other products from Yongnuo can easily be found at Authorized Yongnuo Dealer / Store on Aliexpres.

My video on all Yongnuo lenses here.

YONGNUO YN85mm F1.8 (for Canon EF)

YONGNUO YN85mm F1.8 (for Canon EF)

Main technical characteristics of YONGNUO YN85mm F1.8

Review Instance Name On the lens body: YONGNUO DIGITAL 85mm.
On the case, near the front lens: YONGNUO YN85mm F1.8 Ø58mm MADE IN CHINA. On the box: YOUNGNUO DIGITAL Standart Fixed Focal lens YN85mm F1.8
Basic properties
  • The lens uses a Canon mount EF (Eelectro-Focus) - primarily a lens designed for Canon EOS full-format cameras. Suitable for Canon SLR cameras with mount EF / Ef-s and mirrorless cameras RF / Ef-m with appropriate adapter
  • The lens uses a micro motor for auto focus and is a counterpart to Canon MM (Micro Motor)
  • AF / MF (Auto Focus - Mannual Focus) - the lens is equipped with a focus mode switch
  • internal focus
  • analogue FTM (Full Time Manual Focusing) - the ability to constantly focus manually
  • Multi-enlightened optics (type and quality of enlightenment unknown)
  • Microprocessor Gold Plated Contacts
  • Metal mount
  • Important: a lens from a third-party manufacturer, which imposes some restrictions on its practical use
Front Filter Diameter 58 mm
Focal length 85 mm

Zoom ratio 1 X (this is a fixed lens, it does not have a zoom)
Designed by for full-frame digital cameras. The lens is suitable for all Canon DSLR cameras
Number of aperture blades 8 rounded petals (the number of petals is not indicated in the instructions)
Tags mount label, window with focus distance scale
Diaphragm F / 1.8 to F / 18 (F / 19 at step exposure 1 / 2)
MDF 0.85 m, maximum magnification ratio 1: 7.7
The weight
  • 460 g according to the instructions
  • 426 g without caps according to my measurements
  • 462 g. With caps according to my measurements
Optical design 9 elements in 6 groups

Optical design Yongnuo YN 85mm F1.8 NThe lens does not use special optical elements in its optical design.

Lens hood No lens hood included. The instructions indicate that a YN-ET-65 hood or Canon ET-65III
Manufacturer country MADE IN CHINA (China)
Period From February 2017 to the present day
Instructions See
Price

In terms of focal length, the Yongnuo 85 / 1.8 is a cross between a short telephoto and a standard lens. Yongnuo company refers it to standard fixes (standart fixed focal lens), and the model Yongnuo 100 / 2 already to short / moderate telephoto (medium telephoto prime lens).

Real indicators of aperture (T-feet) are quite large, and are at the level of T / 2.0-T / 2.23. During focusing from MDF to infinity, the decrease in aperture, expressed in T-stops, is not felt at all.

MC Jupiter-9 2/85 and YONGNUO YN85mm F1.8 (for Canon EF)

MC Jupiter-9 2/85 and YONGNUO YN85mm F1.8 (for Canon EF)

Appearance

Yongnuo 85 / 1.8 design copied from the original Canon LENS EF 85mm 1: 1.8 USMhowever, Yongnuo 85 / 1.8 itself turned out to be more puffy than the original.

Assembly

The lens came to the review completely new in a black and golden box.

In a small box is a warranty card, a certificate of quality control, instructions in Chinese and English, a carry case, a bag of desiccant and the lens itself with a front (YN-58) and a back cover. This is the first lens from Yongnuo, in which the front and rear lenses of the lens were not initially covered by special transport films.

The wardrobe trunk has a belt mount, the main valve with Velcro. Wardrobe trunk is very similar to wardrobe trunks from flashes of Yongnuo.

Yongnuo 85 / 1.8 has metal mount mount. The focus ring is rubberized. It is stated that the contacts of the microprocessor are gold-plated. The weight of the Yongnuo 85 / 1.8 is approximately 460 grams (the same Canon LENS EF 85mm 1: 1.8 USM weighs about the same - 425 grams).

Unfortunately, there is no hood in the package. But the lens can use YN-ET-65 bayonet hoods or Canon ET-65III (indicated in the instructions).

Unlike Yongnuo 100 / 2 and many other Yongnuo lenses, Yongnuo 85 / 1.8 model does not support firmware update via USB port.

The diaphragm consists of 8 blades; it will not work to achieve the correct round hole at F / 4-F / 19. At F / 2.0-F / 3.5 values, the hole has notches.

Important: with high-speed shooting, more than 5 frames per second, the aperture blades do not have time to completely close and open. On F / 18-F / 19 apertures, the diaphragm closing mechanism closes and opens the diaphragm for a rather long time. On some cameras, this may lead to an error on the camera display or to an incorrect exposure.

YONGNUO YN85mm F1.8 (for Canon EF)

YONGNUO YN85mm F1.8 (for Canon EF)

Focusing

For focusing, Yongnuo 85 / 1.8 uses micro motor and is an analog of Canon MM (Micro Motor). Auto focus will work with any SLR camera Canon EOS. Most likely, mirrorless cameras with an appropriate adapter should not have any special problems.

When focusing the motor is very noisy. Noise unpleasant and annoying.

Auto Focus Speed average. Focusing speed is enough for comfortable work in most photo tasks. Autofocus speed is significantly lower than that of Canon LENS EF 85mm 1: 1.8 USM.

When using auto focus through JVI on cameras Canon EOS 20D Digitalsimple 9-point focusing system) and Canon EOS 6Dsimple 11-point focusing system) the lens behaves well, does not scour, it induces immediately, with good tenacity, but the number of focusing errors is still large. The quality of work varies slightly from camera to camera. Focusing accuracy is much worse than with original lenses. Significantly more rejects are obtained when using lateral (not cruciform) focus points, especially on Canon EOS 6D.

The focus ring is rubberized and in manual focus mode rotates approximately 135 degrees. Upon reaching extreme positions, the ring does not abut, but continues to rotate freely. Focus ring spinning very tight. During manual focusing, you hear 'plastic rubbing against plastic or metal', friction noise is unpleasant. Manual focus uncomfortable... The focus ring travel is very 'bunched up' in the 2-5 meters range, which requires very, very careful rotation. The direction of rotation of the focusing ring is the same as the original Canon LENS EF 85mm 1: 1.8 USM.

There is a 'AF-MF' (auto focus / manual focus) mode switch on the lens body.

Lens supports continuous manual focus control. This function is similar to the Canon FTM function of the original lenses. Some features of working with FTM are described in detail for me in the Canon 24-105 / 4 L IS USM lens reviewwhich also possesses FTM.

During auto focus focus ring remains stationary.

Lens has internal focus, the front and rear lenses remain stationary during focusing. It is possible to use various filters without any problems. I easily used a Yongnuo 85 / 1.8 with a polarizing filter HOYA 58mm PL-CIR.

The lens has a window with a focus distance scale in meters and feet. The number of values ​​on the scale is small, the scale itself is not very useful. There are values ​​only for 0.85, 1, 1.2, 2, 5 meters and an infinity mark.

The minimum focusing distance is 85 cm and the maximum magnification ratio is 1: 7.7 (0.13 X magnification).

Focus Features:

  1. Important: The focus quality of the Yongnuo 85 / 1.8 in Live View is highly dependent on the camera used.
  2. Sometimes the lens continues to focus for a short time after the focus activation button has been released
  3. Yongnuo 85 / 1.8 has a very pronounced 'Focus Breathing' effect (changing the viewing angle during focusing). During focusing towards the MDF, the viewing angle decreases (usually with internal focusing lenses, the angle increases).
  4. Focus Shift (focus shift, changing focus distance due to iris)
  5. Yongnuo 85 / 1.8 does not have a hard stop (hard infinity mechanical stop) which allows you to accurately and quickly focus the lens to infinity under any external temperature conditions. For accurate aiming at infinity, you cannot just bring the focus ring to its extreme position.
  6. Important: Yongnuo 85 / 1.8 is a third-party lens. It may happen that it will not work correctly with some cameras. Details on this issue are considered by me. here. It is known that there are problems with the camera Nikon D750.
  7. Unknown compatibility with teleconverters.
  8. It is known for certain that the lens has no problems with the adapter Canon mount adapter EF-EOS M (for installing mirror lenses on mirrorless cameras Canon EOS M)
  9. Unknown compatibility with adapters Canon EF-EOS R
YONGNUO YN85mm F1.8 (for Canon EF)

YONGNUO YN85mm F1.8 (for Canon EF)

Image quality

Typically, some Yongnuuo lenses copy the optical design of older Nikon / Canon lenses to achieve comparable image quality. Many people believe that the optical scheme of Yongnuo 85 / 1.8, like its appearance, is copied from the original Canon 85 / 1.8 USM. But the original Canon 85 / 1.8 USM uses the 9/7 circuit, while for the Yongnuo 85 / 1.8, the 9/6 circuit is used with the diaphragm placed elsewhere. The schemes are similar, but differ in the rear pair of lenses.

It is very suspicious that Yongnuo 85 / 1.8 was announced exactly 25 years after the announcement of the original Canon 85 / 1.8 USM. Most likely a quarter century difference is due to patent obligations.

Optically, Yongnuo 85 / 1.8 did not go far from the original Canon 85 / 1.8 USM, with the exception of certain additional flaws in the Chinese counterpart.

Differences in optical circuits Yongnuo YN 85mm F1.8

Differences in optical circuits of Yongnuo YN 85mm F1.8 and Canon 85 / 1.8 USM

Sharpness

  • in the center of the frame at F / 1.8 in terms of resolution it does not shine, but still it is enough for some undemanding photo tasks
  • there is a drop in sharpness to the edges of the frame at f / 1.8
  • at the edges of the frame, sharpness becomes acceptable after f / 4.0
  • good / excellent resolution in the center of the frame on covered apertures after F / 2.8

Distortion

  • the overall level of distortion is at a level typical for such lenses
  • the nature of distortion is unified, easily corrected in the editor

Vignetting

  • the overall level of vignetting is at a level typical for such lenses
  • noticeable vignetting is observed only at F / 1.8-F / 2.5
  • vignetting is enhanced with focus towards MDF
  • vignetting almost disappears at F / 2.8-F / 4
  • vignetting is easily fixable in the editor

Aberration

  • open apertures have a lot of spherical and chromatic aberrations
  • the strongest chromatic aberration visible at the edges and corners of the image
  • Yes strong milling (HA in the blur zone)
  • have a strong blooming (HA on very contrasting small details)

Rest

  • color reproduction differs from original similar lenses, in numerical values ​​it is difficult for me to express the differences, but visually color rendering faded
  • the aperture at F / 2.0-F / 4 has small notches, at F / 4-F / 19 it is poorly rounded and is an almost regular octagon
  • the lens normally tolerates backlight, there are no such serious problems as in the version of this lens for Nikon. Who can explain why? First of all, the version for Canon does not give a color rainbow. Perhaps another enlightenment is used?
  • in many scenes, the lens can create a pleasant / neutral bokeh

There is no lens profile for the lens in popular RAW converters, but most likely the profile will appear shortly or you can create it yourself.

YONGNUO YN85mm F1.8 (for Canon EF)

YONGNUO YN85mm F1.8 (for Canon EF)

Sample Photos on Canon EOS 6D

Full-frame shots Canon EOS 6D. Photos taken using RAW ('.CR2') file conversion with Canon original utility Digital Photo Pprofessional 4 (Canon DPP) without any changes. The control mode 'Standard' was used with the default settings '3/0/0/0'.

Original RAW ('.CR2') photos can be download from this link (79 photos, 1700 MB). thanks Anna Faleeva for organizing a small workshop.

Sample Photos on Canon EOS 20D Digital

Pictures taken with a cropped camera Canon EOS 20D Digital (that?). Photos - on-camera JPEG without any modifications. All photos were taken without using a lens hood, some photos were taken using a light filter HOYA 58mm PL-CIR.

Jpeg source photos download from this link (108 photos, 300 MB). Funny that the pixel density on Canon EOS 20D still slightly higher than Canon EOS 6D.

YONGNUO YN85mm F1.8 (for Canon EF)

YONGNUO YN85mm F1.8 (for Canon EF)

Photos in processing

Photos in small processing can be viewed at 500px: 1, 2, 3, 4, 5, 6, 7.

YONGNUO YN85mm F1.8 (for Canon EF)

YONGNUO YN85mm F1.8 (for Canon EF)

Differences from Canon 85 / 1.8 USM

According to its characteristics, Yongnuo 85 / 1.8 is most similar to the original Canon LENS EF 85mm 1: 1.8 USM.

Advantages of Canon 85 / 1.8 USM over Yongnuo 85 / 1.8:

  1. Canon 85 / 1.8 USM focuses much quieter and more accurately
  2. Canon 85 / 1.8 USM uses Canon USM Ultrasonic Focusing Motorand Yongnuo 85 / 1.8 uses a conventional micro-motor
  3. Canon 85 / 1.8 USM has infrared label
  4. Canon 85 / 1.8 USM has depth of field scale
  5. Canon 85 / 1.8 USM uses more than high-quality enlightenment optics. The specific type of multi-enlightenment Yongnuo 85 / 1.8 is unknown
  6. comes with Canon 85 / 1.8 USM lens hood
  7. Canon 85 / 1.8 USM focuses significantly faster
  8. Hood for Canon 85 / 1.8 USM (Canon ET-65III marking) can be installed in the opposite direction for transportation. The same lens hood specified in the manual cannot be mounted in the opposite direction on the Yongnuo 85 / 1.8, since the lens turned out to be more puffy than the Canon 85 / 1.8 USM
  9. Canon 85 / 1.8 USM per centimeter thinner in diameter
  10. Canon 85 / 1.8 USM closes aperture to F / 22, and Yongnuo 85 / 1.8 only up to F / 18 (F / 19 at step exposure 1 / 2)
  11. Canon 85 / 1.8 USM sewn into modern camerasthat can automatically correct some kind of distortion, for example, distortion or vignetting. Also, the profile for the Canon 85 / 1.8 USM is present in almost all modern RAW converters and allows you to quickly get rid of some distortions.

Advantages of Yongnuo 85 / 1.8 over Canon 85 / 1.8 USM:

  1. Yongnuo 85 / 1.8 25 years newer. The original Canon 85 / 1.8 USM was introduced back in 1992
  2. Yongnuo 85 / 1.8 costs about 2.5 times cheaper
  3. Yongnuo 85 / 1.8 uses gold plated contacts microprocessor (doubtful advantage)

Lenses have almost the same weight, the same diameter of the filters, the same MDF, maximum magnification factor and the same number of aperture blades.

YONGNUO YN85mm F1.8 (for Canon EF)

YONGNUO YN85mm F1.8 (for Canon EF)


All autofocus 85s

Choosing a good 85mm portrait lens is very important for a large number of photographers. I pay a lot of attention to this issue, therefore I have prepared this list of all such autofocus lenses for full frame cameras with F <= 2 and a focal length of about 85 mm.

Nikon (F, Z mounts)

  1. Nikon 85mm 1: 1.8 AF Nikkor
  2. Nikon 85mm 1: 1.8D AF Nikkor (Thailand or Japan)
  3. Nikon 85mm 1: 1.8G AF-S IF SWM Nikkor
  4. Nikon 85mm 1: 1.4D AF Nikkor
  5. Nikon 85mm 1: 1.4GN AF-S Nikkor SWM IF Nano Crystal Coat
  6. Nikon Nikkor Z 85mm 1: 1.8 S

Canon (EF, RF mounts)

  1. Canon LENS EF 85mm 1: 1.8 USM
  2. Canon LENS EF 85mm 1: 1.2 L USM
  3. Canon LENS EF 85mm 1: 1.2 L II USM
  4. Canon LENS EF 85mm 1: 1.4 L IS USM
  5. Canon lens RF 85mm F1.2L USM
  6. Canon lens RF 85mm F1.2L USM DS (DEFOCUS SMOOTHING)

Yongnuo (different mounts)

  1. Yongnuo YN85mm F1.8 (YN85mm F1.8) [Canon EF, February 2017]
  2. Yongnuo YN85mm F1.8 (YN85mm F1.8N) [Nikon F, May 2019]
  3. Yongnuo Ynlens YN85mm F1.8S DF DSM (YN85mm F1.8S) [Sony E, Aug 2020]
  4. Yongnuo Ynlens YN85mm F1.8R DF DSM (YN85mm F1.8R) [Canon RF, May 2021]
  5. Yongnuo Ynlens YN85mm 1:1.8Z DF DSM (YN85mm F1.8Z) [Nikon Z, March 2022]

Sony / Sony Zeiss ZA / Minolta (E / FE, A mount)

  1. Sony FE 1.4/85 GM (SEL85F18GM) [2016]
  2. Sony FE 1.8/85 (SEL85F18) [2017]
  3. Sony SAL85F14Z / Carl Zeiss Planar 1,4 / 85 ZA T* [2006]
  4. Minolta AF 85mm 1:1.4 (22) (AF lens 85) / Minolta Maxxum / Dynax / G / G+RS and other versions of the same lens, A mount

Sigma (different mounts)

  1. Sigma EX 85mm 1: 1.4 DG HSM (two sub-versions with different body coatings, for Canon EF, Nikon F, Pentax K, Sony A), 2010
  2. Sigma 85mm 1:1.4 DG | A [Art] (for Canon EF, Nikon F, Sigma SA, Sony E, Leica L)
  3. Sigma 85mm 1: 1.4 DG DN | A [Art] (for Sony E, Leica L), 2020

Viltrox (different mounts)

  1. Viltrox PFU RBMH 85mm F1.8 STM (Sony E / FE + Fujifilm X, April 2019)
  2. Viltrox AF 85 / 1.8 II XF STM ED IF (Sony E / FE + Fujifilm X, July 2020). Lightweight second version
  3. Viltrox AF 85 / 1.8 Z STM ED IF (Nikon Z, Dec 2020)
  4. Viltrox AF 85 / 1.8 RF STM ED IF (Canon RF, Nov 2021, with AF / MF switch)

Pentax (K mount)

  1. SMC Pentax-FA* 1:1.4 85mm IF AUTO FOCUS PENTAX 85, 1992
  2. HD PENTAX-D FA * 85mm 1: 1.4 ED SDM AW 2020

Samyang / Rokinon (different mounts)

  1. Samyang AF 85 / 1.4 [EF or F] (for Canon EF, Nikon F, scheme 9/7)
  2. Samyang AF 85 / 1.4 FE (for Sony E, scheme 11/8, March 2019)
  3. Samyang AF 85 / 1.4 RF  (for Canon RF, scheme 11/8, May 2020)
  4. Samyang AF 85 / 1.4 FE II (for Sony E, scheme 11/8, July 2022)

Meike (Canon EF, Nikon F, Sony E)

  1. MEIKE 85mm AF 1: 1.8 [review] (Canon EF / Canon EF-S, April 2018)
  2. MEIKE 85mm AF 1: 1.8 [review] (Nikon F, Aug 2020)
  3. MEIKE 85mm 1:1.8 Auto Focus Lens FF STM (for Sony FE/E, June 2022)

Zeiss (Sony E / FE mount)

  1. Zeiss Sonnar 1.8 / 85 T * (Batis 1.8 / 85)

Tamron (different mounts)

  1. Tamron SP 85mm F/1.8 Di VC USD Model F016 (for Canon EF, Nikon F, Sony A [without VC function])

Tokina (Sony E / FE mount)

  1. Tokina atx-m 85mm F1.8 FE (for Sony E, most likely a complete analog Viltrox PFU RBMH 85mm F1.8 STM)

Contax (Contax N mount)

  1. Carl Zeiss Planar 1,4 / 85 T * (Contax)

Panasonic (L mount)

  1. Panasonic LUMIX S 1: 1.8 / 85mm 2020

Separately, you can still highlight non-classic 85s:

  1. longer LEICA APO-SUMMICRON-SL 1: 2/90 ASPH. (Leica L)
  2. less aperture Sony 85 / 2.8 SAM (SAL85f28) [2010, A]
  3. shorter SMC PENTAX FA 1:1.8 77mm Limited (1997, K)
  4. shorter HD Pentax-FA 1: 1.8 77mm Limited (2021, K)
  5. shorter Samyang AF 75 / 1.8 FE (2020, E)
  6. macro lens Canon Lens RF 85mm F2 MACRO IS STM [2020, RF]
  7. cropped Samsung Lens 1:1.4 85mm ED SSA i-Function [NX]
  8. cropped FUJIFILM FUJINON LENS SUPER EBC XF 90mm 1:2 R LM WR [X]

YONGNUO YN85mm F1.8 (for Canon EF)

YONGNUO YN85mm F1.8 (for Canon EF)

Prices

Yongnuo 85 / 1.8 lens prices aliexpress.com can see and buy at this link. On aliexpress.com this lens is sold on average by $170.

My experience

Yongnuo lenses in the Nikon / Canon version often differ in a lot of small things. Yongnuo 85 / 1.8 is no exception. In general, the version for Canon, even though it is 2 years older than the version for Nikon, turned out better.

Most likely 25 years that have passed between the announcement Canon EF 85 / 1.8 USM and Yongnuo 85 / 1.8, are related to patent obligations.

On Canon APS-C cameras EGF Yongnuo 85/1.8 lens will fit around 136mm due to crop factor. On the crop, this is almost a real 135-tka, such EGF convenient enough for portrait shooting in open locations.

New Yongnuo 85 / 1.8 costs less than the cheapest portrait original lens Canon EF 85 / 1.8 USM in a used state, which I recommend instead of Yongnuo 85 / 1.8.

Also, if you are looking for a similar inexpensive lens, you can also look at the review. Meike 85mm 1: 1.8 AF (for Canon EF mount).

Comments on this post do not require registration. Anyone can leave a comment. A wide variety of photographic equipment can be found on AliExpress, The Amazon и B&H Photo.
YONGNUO YN85mm F1.8 (for Canon EF)

YONGNUO YN85mm F1.8 (for Canon EF)

Results

Yongnuo 85 / 1.8 is a very interesting lens in terms of its parameters and price. The Yongnuo 85 / 1.8 may be the first 'true' budget portrait lens in a hobbyist's wardrobe. Perceptibly cheaper than the new original Canon EF 85 / 1.8 USM. Optically, Yongnuo 85 / 1.8 is almost at the level of Canon EF 85 / 1.8 USM, but the original lens is much more stable in terms of focus accuracy.

10 main advantages

  1. low cost. This is one of the cheapest 85 / 1.8 class autofocus lenses in the state of new (the price can be viewed here)
  2. there is a window with a scale of focusing distances
  3. internal focus
  4. average auto focus speed sufficient for comfortable operation
  5. continuous manual focus control, equivalent to Canon FTM
  6. good build quality: metal bayonet mount, most of the body is metal, reliable and comfortable covers, bayonet type hood, rubberized focus ring
  7. carrying case included
  8. eight-petal diaphragm
  9. nice / neutral drawing, which can be used as a good artistic technique during portraiture
  10. Confident sharpness starting at f / 2.5 in the center of the frame. Moderate level of basic optical distortion (aberration, vignetting, distortion) comparable to the original lens

10 main disadvantages

  1. no USB port for firmware upgrade (lens Yongnuo 100 / 2 and some other Yongnuo lenses can update firmware via USB)
  2. rubbing sound from the focus ring during its rotation (independent of AF / MF mode), rather inconvenient and tight manual focus
  3. strong and unpleasant noise from the focus motor
  4. conventional micro focus motor (y Canon EF 85 / 1.8 USM USM motor used)
  5. serious problems with focusing in Live View with some cameras in the first lots of this lens
  6. focus accuracy is noticeably worse compared to the original lenses
  7. no lens hood included, original lens hood Canon ET-65III cannot be installed in the opposite direction
  8. the aperture at F / 4-F / 19 is poorly rounded and is an almost regular octagon. F / 2.0-F / 3.5 values ​​have notches. The aperture closes and opens at a noticeably slower aperture than the original lenses.
  9. lack of data about the lens in modern cameras and RAW converters, which makes it difficult to automatically correct some types of optical distortions (distortion, vignetting etc.)
  10. certain imperfections in the image, for example, severe chromatic aberration

Material prepared Arkady Shapoval... Look for me on Youtube | Facebook | Instagram | Twitter | Telegram.

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Comments: 64, on the topic: Review YONGNUO YN85mm F1.8 (for Canon EF)

  • Radmir

    If you are real labor))) photographer take this device)))

  • Radmir

    It is better to buy a native under the canon, even used, but native. And shoot for fun. Nerves are more expensive.

    • anonym

      Arkady wrote about this :) native take, native is better

  • Novel

    Good try, Yongnuo, but no. Flash you get better copy. Of glass, only 14 / 2.8 is of interest due to the wild price of the original from Canon. But budget glasses are better about the original. Even adjusted for 25 years of difference.

    • Arkady Shapoval

      Their 35 / 1.4 is quite suitable

      • Novel

        35 / 2IS suits me more :)

  • Koba

    From a technological point of view, it usually takes a company 1-2 cycles to reach a high level of production of certain products. In China, usually the first samples are produced as trial ones, no one expects to take a high bar. At this stage, there may be exact copies of other manufacturers, or old samples, or of very mediocre or frankly poor quality, as well as a test of the price niche, beyond which the company should not go, but if they look that this product has a future in this price range, then they will make their own product, fortunately, calculating the lens now in China is sheer trifles. At one time, Zhongyi also counted on and produced lenses for many foreign companies, and then began to produce its own kind of even unique lenses. Other manufacturers are following his example, and Yongnuo also tried to make autofocus lenses. Personally, I don’t think it’s worth buying these lenses now, in theory they should have problems, including fatal ones, but if they continue production, in 4-5 years (this is one technological cycle in time) we will see their new ones versis or fairly modified old versions. This happened with their fifty dollars, but the second cycle is also not the main one and is top-end, usually really good products are obtained starting from the third cycle. The same Japanese companies already have more than 70-80 years of experience in the production of products, of course, new manufacturers cannot reach their level from the first run. Yes, of course, everyone can turn to Tamron and order an industrial design for a new lens (Kyocera did this with the Zeiss Batis line), but it is expensive, and it is also quite possible that with this approach the lens itself will not be very cheap to manufacture. But sooner or later, based on my personal experience in the field of production in China, I can assume that in the future we will see some lenses from Yongnuo in a new and better performance. In the meantime, their products have only one plus - this is the price, as well as two less acceptable products - 50 / 1.4 and 14 / 2.8.

    • Arkady Shapoval

      Thank you, good thoughts. They should have STM motors soon, and if they update everything based on them, it will be very cool. Also, again, their 35 / 1,4 is a very tasty solution

  • Igor

    MONTH BACK SELLED NEW 85 / 1.2L EVENING HARE catches like a bastard.

    • anonym

      There are no new 85 1.2, there are only 82 / 1.2 LII

  • Alexander

    quite suitable glass for the money.
    By the way, appreciate this glass, who thinks about bokeh, color?
    https://a.radikal.ru/a09/1906/82/d370e6f142db.jpg

    • anonym

      There is no color, no bokeh, the composition is weak, let's still

    • Onotole

      I think that if you shoot not in the afternoon sun, the picture could be better.
      I also think that this is some kind of width, it looks like 35 approximately focal. At the same time, the aperture is not very wide, f / 4 or even darker - probably the zoom. Well, either the crop factor of the camera is hoo.
      The bokeh is "nervous", not the most pleasant on standard plots, but if you get creative with the matter, you can probably portray something interesting with it.
      It's not clear about the sharpness - the picture is small, compressed.
      In short, I would even venture to suggest that this is something like a soap dish with a fixed zoom with a small magnification (x3-x5).

      • Onotole

        And an inch matrix or so.

    • Novel

      Well, when shooting white or yellow flowers (and sometimes scarlet), it would be better to compensate for the exposure minus from a half step to a step, otherwise there are no details in the petals, and they are the most significant subject of the picture.

      • Valentine

        He still has details in the petals, at least on my monitor I can see it. It is also easy to verify this by tidying up the lights in any editor. Guessing about the lens is useless, since the picture is cut, crumpled and does not contain any traces of EXIF. What was done with it and how far the result is from the original shot, only the author knows. From such a picture, one can only judge about this picture itself, but certainly not about the lens or camera. The picture is mediocre in all respects, there is not much to praise for.

    • Alexander

      all criticism is absolutely correct.
      but it is shot on a Samsung Galaxy S9.
      if you try, you can significantly improve the picture.
      Here are examples of what you can get on a smartphone
      https://www.dpreview.com/samples/9162675742/samsung-galaxy-s10-sample-gallery

      an obvious and simple fact - smartphones have reached the quality level of matrices of 1 inch - 1.5 cm, depending on the optics of the latter. but certainly no worse than whale lenses.
      in terms of high ISO, the same google pixel night sign provides better quality than crop 1.5 matrices
      https://www.digitaltrends.com/mobile/google-pixel-night-sight/

      the reason is simple, there are details
      https://vas3k.ru/blog/computational_photography/
      and this seems to be the future.
      Yes, I have a camera with a full-frame sensor and a set of lenses. but it gathers dust on a shelf, because the weight with a zoom lens is 1.5kg-2kg.
      and with a smartphone I can make a completely satisfactory photo quality and no weight on my neck.

      Cheap Chinese lenses are good, but their quality will be close to smartphones, with variations of course.
      pros will buy something else without options.
      therefore, IMHO, their market is strictly limited by amateurs with a limited budget who are not comfortable with smart but have no money for high-quality optics.

      • Onotole

        Nifiga itself scatter: doymovaya matrix - crop 1,5. It's like putting micro 4/3 and SF like GFX in one row.
        No, the quality is exactly that of an inch matrix, or maybe even 2/3, with a crop of 1,5 not even close to compete, even with a micro there will be a difference and not in favor of the phone.
        There is no point in shouting “phones are already shooting no worse than your DSLR bricks” at a time when everyone said that the picture from the example is shit, and the colors are shit, and the bokeh is weird. That's when they stop guessing - then you will drown for the phones. In the meantime, yes, almost a full-fledged replacement for soap dishes (according to the picture, but not in terms of usability), which is shown by the sales data of the same soap dishes with an inch matrix or less.

        • Alexander

          inch matrix - crop 1,5 differ little in many shooting conditions. Moreover, the same pseudo SF fuje often shoots worse in quality than some FF cameras. and mikra often cannot be distinguished from FF.
          you will have more practice, less confidence in the numbers on paper.
          full of paired frames in blogs, where it is impossible to determine where which matrix is, although the spread in size is at times. here's a couple, will you determine where who is? options - SF, FF, crop 1.5, micra, inch matrix, smartphone (crop 1: 1, center of the frame, focal slightly differ, default conversion in native developers)
          https://b.radikal.ru/b30/1907/ee/a3fc8aa71f94.jpg
          So who is left and who is right? )

          • Pokemon

            It looks like we have another sectarian like Misha.
            We take to the streets of a night city without a tripod and immediately see the difference.

            • Alexander

              I really like the expression of the trolls “we have” - I thought that this is the site of Arkady and not the trolls. ) Or have they already become masters?
              Arkady, will YOU have such a forum that you can express your opinion without the risk of getting a shortcut from the next troll?
              Well, another pokemon troll hangs the label "sectarian" -
              Arkady, can I somehow ban such rudeness?
              Really, nothing can be discussed because of them.

              • Pokemon

                Alexander, how old are you?

          • Novel

            Tell me, do you take something else apart from juice packets with subsequent comparison for sharpness? A mirror (or even a mirrorless mirror) is a modular design of varying degrees of complexity. This is light control. These are specialized lenses. And the telephone is the telephone. A piece that can also be removed.

            • Alexander

              Roman, firstly it's just a couple of photos from the Internet, did you read what I indicated? try to reread ...
              Secondly, if you bother to google it, you will find a huge number of paired photos from landscapes to portraits.
              Thirdly, judging by your comment, you can’t determine what is removed without an exif. Not at all)

              This is what was required to be proved - under normal conditions, the size of the matrix does not really matter today.

              I don't see any point in discussing studio productions - they have their own specifics. As in the macro genre. And in the reporting / sports genre. Etc. Specialized instruments are used for these genres.
              Therefore, read the above - I directly pointed out that we must clearly understand when and where there will be a difference in tools.
              And now the question is - how many fans of D70, D7000 and other crop owners are able, know and USE the setting of light, carry reflectors with them, puffs with arsonists, a couple of three assistants? Honestly? ))) Here I am about it.
              The result is obvious -
              The pros themselves know what he needs.
              It’s often IMPOSSIBLE to determine what is removed.
              The size of the matrix often does not matter (of course, not always).

              • Novel

                A DSLR is not a matrix size. More precisely, not just size. You take a typical scenario - a landscape or a portrait without special equipment, shoot a frame with a phone, take a frame with an equivalent focal point on a DSLR and compare. If you used your DSLR only in this way - automatic mode and fix and that was enough for you - well, congratulations, you coped with hammering nails with a microscope, now you have found a suitable hammer and are glad that you do not need to carry a heavy microscope.

                Most people who purchase a DSLR use it for other purposes. This is a problem for most people, not a tool that is not used even at 10% of the capabilities.

              • Onotole

                “Judging by your comment, you can NOT determine what was filmed without an exif. Not at all)

                This is exactly what was required to be proved - under normal conditions the size of the matrix does not really matter today. "

                All this only says that if the hands are crooked then the top FF with top lenses can be removed so that it seems that the phone could have been removed better, that’s all.

            • Alexander

              And Roman, if you want not to discuss technology and facts, but just flood or troll, then this, perhaps, without me, is not interesting for me to flood. Thank you for understanding!

              • Vitaly N

                Alexander, all your posts in THIS topic are flooding. Take the trouble to read the title. Everything is as usual - just don't like something in the dialogue, they shout “flooders, trolls!”, Not knowing the definition of this.

          • Michael

            And now we look at 100% crop of the landscape at infinity and immediately everything will fall into place. While the phone is DIFFERENTLY different from the DSLR even in the afternoon. Comparisons can only be in a very narrow range of shooting and viewing conditions. Eight times an article is optional. The curious have already read. Yes, good, but still early. I myself would not refuse to take pictures on the phone, but I am carrying a brick and so far this is without alternatives.

            • Alexander

              100% crop there is a difference. Does anyone argue with this? it seems not. 8 times no one posted.

              The question is, how many people view pictures 100%? what are they looking at?
              the answer is 2MP or 4MP on a monitor or smartphone / tablet.
              the difference will be huge? your opinion?
              The link above is your opinion, the gallery on the Samsung S10 + is much worse than the crop of DSLRs? make a preview at 4MP, paired photos with a DSLR, show the difference)

              farther. evening shots of crop DSLRs are already worse, noticeably worse than night modes of smartphones if you shoot without a tripod. it’s just a fact who likes who don’t. take a couple of frames and see the difference.
              Well, a crop DSLR cannot do buffering of a dozen frames from exposure brackets and form a final frame. just can't.

              the link above is paired shots, what was it filmed for? and this is the most common shot for travel and 100% crop as you wanted ...

              • Onotole

                What difference does what% of people consider at 100% increase?
                What difference does% know how, they know and USE staging light, carry reflectors, puffs with arsonists, a couple of three assistants with them?

                The main thing is that I do all this and therefore shoot with a DSLR;
                You - you don't (or you do, but would like to stop) - are filming with your phone.
                Everything is elementary.

            • Michael

              Just above they themselves brought the crops, like we can't determine where the phone is. Now the pictures have a difference, but who is viewing them. I already, well, for the 6th time see the article above. Packet photography is an extraordinary shot for any trip. There are no arguments alone. So it is clear that while a phone for 50k shoots worse than a DSLR with a lens for 15-20k. I like Instagram - you are welcome, only the site was mistaken

          • Onotole

            I wonder what I should understand from the two muddy packets of juice out of focus?
            I more or less accurately determined what your flowers were taken for, the rest just vomited a little from the picture, it would seem that what else is needed?

            • Alexander

              You probably don’t know what RAV is without using corrective profiles / curves. therefore, for you it is muddy), it happens.
              you cannot distinguish paired pictures, you took the smartphone for an inch matrix, RAVs you do not understand how they open, rude.
              further I see no reason to comment on your posts. then you interfere with the bulk, then “vomit” (after the weekend? Have you drunk or ate something stale in this heat?), then hang labels on everyone who has an opinion different from yours. Thank you for understanding.

              • Onotole

                When the arguments in the dispute end, they become personal, distorting and direct insults.
                Even if I ate something wrong on the weekend, what does this have to do with the subject of discussion.
                And yes, I have absolutely no idea how you can open and view a rav without any profiles at all, for some reason I used to think that this was impossible due to the fact that rav is just a set of data from a matrix (separately from each of the pixels with Bayer pattern) and the image displayed on a standard monitor is a quantized 3 by 8-bit RASTER for R, G and B for EACH pixel.

          • Paul

            two shit-photos of some juice packets now characterize the progress of mobile photography? The best smartphone in terms of photography was and still is - Lumia 1020. it is a compact camera with a telephone function. The rest are still far from it, at least hang 12 lenses on the back cover. But it can not even be compared in the picture with some kind of canon powershot sx 170 is due to the presence of at least the same optical zoom in the camera! Photography is not megapixels and detail. A photograph is a composition emphasized by exposure. And the laws of physics (optics) when constructing a composition have not yet been canceled.

            • Michael

              Well, in fairness, soap dishes are worse than modern top-end phones. Their processors are very dull, the lenses are also bad. But the phones do not yet reach the "large" system cameras and this is noticeable. To compare the phone even with a crop of 1,5, you have to wait another 10 years.

              • Onotole

                The cheapest - maybe. Medium and high end or the same or better. That same photo with flowers reminded me of a picture from my old X20. This is exactly the same (except that the X20 does not make gray out of white), why I suspected a zoom and a small matrix

        • Alexander

          To be clear - yes, I have a pair of tripods including a carbon one with a head for $ 600. yes, I have a FF camera and everything that comes with it. )
          Which absolutely does not change the above - the smartphone perfectly shoots during the day no worse than a crop clamped to 5.6 on an inexpensive lens, and the quality of even evening photos is quite at the level - see the links to the gallery above.
          And google pixel WITHOUT a tripod shoots BETTER camera crop WITHOUT a tripod. It's just a fact, whether you like it or not. Reasons - see article link above.

          • Onotole

            That's when the smartphone can shoot not like a crop clamped to 5.6 on an inexpensive lens, but at least as FF with 135 / 1.8 or 14-24 / 2,8, then we ask you to be welcome, I will be the first to discuss all the pros and cons with pleasure.
            In the meantime, the Chinese hero of this review with the D90 line (giving almost “for so” at flea markets) puts absolutely any smartphone on both shoulder blades into his lungs. Unless you can put it in your pocket, the only negative.

            • Arkady Shapoval

              In this review, not d90, but 20d. I’m still inclined to believe that due to the specifics of perception, the final product for the masses from smartphones will soon win crop 1.5

              • Onotole

                Do you mean the specifics of consumption? In the sense that the most popular photo consumption scenario for the masses looks like an Instagram ribbon scroll (3 previews across the width of a 5-6-inch phone (or, in extreme cases, scrolling through the entire photo on the same screen)?
                In this regard, I completely agree. But that's what it is and art, so as not to be accessible (or even understandable) to the first and everyone.

      • Novel

        No, sorry. If the task is to shoot something at something at hand - go ahead, the phone gives an acceptable picture. If I have a photo bag with me, then I have a telephoto in it, a shirik, a universal makrik, something fast, the polarization for this thing, the ND filter is variable, the tripod I want some compact and lightweight and an external flash for two batteries. I solve all these problems, and then I finish the processing. And the telephone - what a telephone. It’s disgusting to pick up after the camera, as if your fingers were chopped off and you hold it with your hands.

        • Oleg

          Cool said

        • Onotole

          I recommend the element series manfrotto - inexpensive, compact, quite decent quality, there are carbon versions, a comfortable (for photography) head included.

          • Novel

            Thanks, I'll take a look.

          • Novel

            Yes, carbon fiber small and take it perhaps.

      • zengarden

        Alexander, nice try, but no. And the smell of personal interest in your opus is too noticeable. I hope this is not an advertisement for Samsung 😀 Okay, jokes aside.
        On a smartphone (especially modern multiprocessor multi-lens multipixel ones), you can get a BEAUTIFUL picture, but this is mainly due to the post-processing of the image (the processors there are now very powerful, the algorithms are advanced). This photo will be enough for publication on the Internet. Especially for all sorts of glamorous blogs (since there are many filters available, this is not for you to learn Photoshop). But you cannot view such photos under magnification - you can get a culture shock. And, of course, there is no need to talk about commercial photography either.
        Yes, I know, some people make good videos with iPhones; not bad for watching on YouTube or in these of your Instagram.
        But the laws of physics cannot be fooled. A small multi-pixel matrix (s), small lenses (albeit complex ones, with autofocus and stabilization) will not give you an image comparable even with a double-crop, and here no most advanced algorithms and neural networks will stretch the picture (unless they “figure out” the missing material, as it is done now).
        But smartphones have some indisputable advantages: they are compact, convenient, there you can process the photo right after shooting and send it to the Internet, for example. For the layman, this is quite enough. For a blogger shooting "bows", food, scenes, short videos for Instagram. Even for a photographer as a pro-twilight camera. But there is no need to compare the image received by the smartphone and the photo from "real" cameras.

  • anonym

    Aah! Cyprid is back! How glad I am that she is back!

  • anonym

    Cool photos, and even without processing

  • Paul

    This lens is best used in a studio with good light. With a lack of light, the focus is always somewhere nearby, but not where it is needed (open 1.8-2.0). In a strong backlight (against the sun) refuses to focus at all! He seeks, seeks, and does not find. After a photo shoot in the sand pit, sand poured under the focus ring, as a result, it is sooo hard and now walks with a characteristic crunch. I didn’t put the camera on the sand, put it in a backpack when moving, but managed to grab the lens.
    The conclusion compared to the original is heaven (canon ef 85 1/8 usm) and earth (YN 85 1/8). Even a top-of-the-line fifty kopeck 1.4 by YN's standards simply flies in focusing in medium difficulty conditions like plywood over Paris in comparison with the EF 85 1.8, although it's not entirely correct to compare them.
    I advise you to look for used originals. I hope YN will finally take a step forward and solve its most basic problem with lenses - focusing and abandon its micromotors in favor of ultrasonic ones.

    • Arkady Shapoval

      Tell me, please, on which camera are you using the lens?

  • Alexey

    I want to take either YN85 / 1.8 or YN100 / 2 for use with 5D2. The focal lengths are about the same and I can “close my eyes” to this. It is much more interesting which glass shows itself better in terms of resolution and focusing reliability? Also in favor of 100/2 is the presence of a USB port. Who will advise what?

    • Arkady Shapoval

      hundred, as for me, more interesting

      • Alexey

        Here, too, bow so far.

  • Marina

    Arkady, as an experienced photographer, give advice.
    I'm just starting to study photography, I bought a Nikon 3100 camera (old, but they say that for beginners), the kit comes with a standard 18-55 lens.
    Recommend a more advanced lens for portraits, for black budget constraints, again for a beginner.
    They advise just YN85 mm 1,8, but judging by your review, the version is not very good. And the original is not suitable for the budget.
    Give advice 🙏

    • Marina

      For a limited budget *

    • Arkady Shapoval

      Nikon 50 / 1.8G is better for starters

  • Arkady Shapoval

    It just so happens that I have used almost all Yongnuo lenses. Added YouTube videos for all Yongnuo lenses (generations, lineups, etc.) https://youtu.be/AfQ76sAwIac

  • Dmitriy

    Glass can eat up batteries on older cameras. On the Internet, you can find quite a few threads that yongnuo lenses drain the battery.
    I managed to encounter this on Canon EOS 5. As a result, I was not too lazy to power the camera from a laboratory power supply and see the current of 150 mA on the turned on camera instead of close to zero. So be aware. If the battery can be charged more often, then there is not enough money to buy 2CR5 batteries.

    A video about this was uploaded to YouTube if anyone needs proofs.

    • Alexey

      one hundred milliliters? and the camera and optics did nothing at the same time? was the hole open?

  • Peter

    Good evening! Tell me, I bought such a lens, the aperture does not change in liveview mode, then it is 1,8, then it jumps to 2, and that's it. Also, sometimes it simply does not respond, neither focusing nor aperture works, it is treated by removing it from the camera and installing it back. I wiped the contacts. Tell me, is it just an incompatibility with the camera or a marriage? Canon 7d camera.

    • Arkady Shapoval

      There may be incompatibility, there may be a problem lens. In Live View, third-party lenses may often not work correctly

      • Peter

        So I think what to do with it, hand it over to the service under warranty, or leave it and come to terms with this problem, I used it three times in total for half a year.

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