Overview of YONGNUO Ynlens YN50mm F1.8S DA DSM

According provided by Ynlens YN50mm F1.8S DA DSM lens huge thanks directly company Yongnuo.

YONGNUO Ynlens YN50mm F1.8S DA DSM

YONGNUO Ynlens YN50mm F1.8S DA DSM. increase.

Please note that the YONGNUO Ynlens YN50mm F1.8 DA DSM lens is available in different mounts. This review shows the YONGNUO Ynlens YN50mm F1.8S DA DSM version for mirrorless cameras Sony E with APS-C sensor (for cropped cameras). At the same time, YONGNUO Ynlens YN50mm F1.8 DA DSM is also available with mounts Nikon Z (model Yongnuo YN Ynlens 50mm F1.8Z DA DSM) and Fujifilm x (model Yongnuo YN Ynlens 50mm F1.8X DA DSM).


  1. In short
  2. History
  3. All lenses from Yongnuo
  4. Appearance
  5. Main Specifications
  6. Assembly
  7. Focusing
  8. Firmware Upgrade
  9. Image quality
  10. Sample Photos
  11. My experience
  12. Similar lenses
  13. All Sony APS-C E cameras
  14. All original lenses for Sony APS-C E
  15. Price
  16. Results
  17. User Comments
  18. Add your review or question on the lens

In this review, I will call the Ynlens YN50mm F1.8S DA DSM lens for short YN 50 / 1.8S.

YONGNUO Ynlens YN50mm F1.8S DA DSM

YONGNUO Ynlens YN50mm F1.8S DA DSM

In short

YN 50 / 1.8S is the first lens from Ynlens (Yongnuo) for Sony mirrorless cameras with APS-C sensor (i.e. cropped sensor) and Sony E mount.

YN 50 / 1.8S - classic fifty dollars. Internal autofocus, quiet and fast enough focusing step motor. Everything works without problems. Optically good, with good sharpness across the entire field of the frame, without strong distortion or vignetting. Only chromatic aberration make themselves felt.

YN 50 / 1.8S - lightweight, compact, pleasant. It is strange that other manufacturers have not yet released such an affordable lens for Sony E. Those fifty-fifty lenses that are already available are either manual (without autofocus), or have a significantly higher price tag.

YONGNUO Ynlens YN50mm F1.8S DA DSM

YONGNUO Ynlens YN50mm F1.8S DA DSM


The lens was officially announced April 10 2020 years.

YN 50 / 1.8S is first lens from Yongnuo for a cropped mirrorless Sony system with a Sony E mount. It is not known for certain from which lens it was copied and whether it was copied at all, perhaps this is Yongnuo's own development. Why copied? Indirectly, this is evidenced by the fact that the inscription 'Yongnuo' does not light up anywhere on the lens, box or instructions, but only 'Ynlens'. Perhaps this is due to some kind of patent obligations, or perhaps this is just such a minor rebranding.

November 12, 2023 released version of this lens for FujiFilm X system mirrorless cameras.

YONGNUO Ynlens YN50mm F1.8S DA DSM

YONGNUO Ynlens YN50mm F1.8S DA DSM


This is what the lens and the box in which it is delivered look like. In some pictures, it is shown along with the camera. Sony a3500.

Some YONGNUO lenses come with blue protective films, as shown in the gallery above.

All Yongnuo Lenses

Bayonet mount Sony FE [DF, FULL FRAME] и Sony E[DA,APS-C]:

  1. yongnuo 11 mm 1:1.8 DA DSM WL S [announcement]
  2. yongnuo 16 mm 1:1.8 DA DSM S [announcement]
  3. yongnuo 35 mm 1: 2 DF DSM S [review]
  4. yongnuo 50 mm 1: 1.8 DF DSM S [announce]
  5. yongnuo 50 mm 1:1.8 DA DSM S [overview]
  6. yongnuo 85 mm 1: 1.8 DF DSM S [review]
  7. yongnuo 85 mm 1:1.8 DF DSM S II [announcement]

Bayonet mount Canon RF (mirrorless full frame):

  1. yongnuo 35 mm 1: 2 DF DSM R [review]
  2. yongnuo 35 mm 1:2 CR [announcement]
  3. yongnuo 50 mm 1:1.8 DF DSM R [to be announced]
  4. yongnuo 85 mm 1:1.8 DF DSM R (two subversions with different names) [review]

Bayonet mount Nikon Z [DF, FULL FRAME + DA,APS-C]::

  1. yongnuo 11 mm 1:1.8 DA DSM WL Z [announcement]
  2. yongnuo 35 mm 1:2 DF DSM Z [announcement]
  3. yongnuo 50 mm 1:1.8 DF DSM Z [announcement]
  4. yongnuo 50 mm 1:1.8 DA DSM Z [review]
  5. yongnuo 85 mm 1:1.8 DF DSM Z [announcement]

Bayonet mount fujifilm x [DA,APS-C]:

  1. yongnuo 11 mm 1:1.8 DA DSM WL X [announcement]
  2. yongnuo 50 mm 1:1.8 DA DSM X Pro [Announcement]
  3. yongnuo 50 mm 1:1.8 DA DSM X [announcement + overview]

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]
  4. yongnuo 12-35 mm 1:2.8-4 STM ASPH MACRO [announcement]

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 [review N]
  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 [review N]
  9. yongnuo 85 mm 1: 1.8 [review]
  10. yongnuo 100 mm 1: 2 [overview]


  1. Yongnuo YN433 (2023, Micro 4/3, 20 MP, 4K)
  2. Yongnuo YN455 (2021, Micro 4/3, 20 MP, 4K)
  3. Yongnuo YN450/450M (2019, Micro 4/3 -> Canon EF, 16 MP, 4K)

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 Ynlens YN50mm F1.8S DA DSM

YONGNUO Ynlens YN50mm F1.8S DA DSM

Main technical specifications of Ynlens YN50mm F1.8S DA DSM

Review Instance Name On the case: Ynlens YN50mm F1.8S DA DSM 0.45m / 1.48ft

Near the front lens: YN50mm F1.8S DA DSM Ø49mm

On the box: Ynlens YN50mm F1.8S DA DSM STANDART PRIME LENS

Serial number on the bayonet side: 3000001

Basic properties
  • S (Sony) - designed for Sony mirrorless cameras with APS-C sensor and E mount
  • DA (DIGITAL APS-C) - marking indicating that the lens for cropped cameras
  • DSM (Digital Stapping Motor) - focusing stepper motor
  • Internal focus
  • Electronic focus ring
  • DMF (DDirectly Mannual Focus) - direct manual focus
  • Low dispersion elements in the optical circuit
  • USB-port for firmware update
  • Rounded petals aperture
  • Nanometer multilayer coating - special optical coating
  • Light weight
  • Included hood
  • Important: a lens from a third-party manufacturer, which imposes some restrictions on its practical use
Front Filter Diameter 49 mm, plastic thread for filters
Focal length 50 mm, EGF for Sony, Nikon, FujiFilm cameras with APS-C sensor is 75 mm
Zoom ratio 1 X (this is a fixed lens, it does not have a zoom)
Designed by for Sony NEX/ALPHA mirrorless cameras with APS-C sensor and E/FE mount (later versions for Nikon Z, FujiFilm X appeared)
Number of aperture blades 7 rounded petals
Tags bayonet mount mark and hood mount mark
Diaphragm F / 1.8 to F / 16
MDF 0.45 m, maximum magnification factor 0.14 X (1: 7.1)
The weight
  • 146 grams per instruction
  • according to my measurements, 145 grams (without covers and hoods)
Optical design 8 elements in 7 groups. The scheme includes 1 low dispersion element LD

Optical design YONGNUO Ynlens YN50mm F1.8S DA DSMThe image of the optical scheme is clickable to enlarge

Lens hood Bayonet Type, Model LH-52T
Manufacturer country Not indicated, but it is known that the lens is made in China
  • from April 10, 2020 for Sony E
  • from November 12, 2023 for FujiFilm X
  • from January 18, 2023 for Nikon Z DX
Prices View on AliExpress from an authorized Yongnuo dealer

In general, the YN 50 / 1.8S is an alternative to the original Sony 50 / 1.8 OSS. There are few croaked fifty dollars, while they are quite popular among amateur photographers, since cropped cameras can act as budget portrait and creative lenses.

YONGNUO Ynlens YN50mm F1.8S DA DSM

YONGNUO Ynlens YN50mm F1.8S DA DSM


The lens came to the review completely new, with the serial number '3000001'. The front and rear lenses were covered with protective films.

In a small box was a warranty card, instructions in Chinese and English, a certificate of quality control, a desiccant, bags, a lens hood and the lens itself with a front and rear cover. The covers are made of thick plastic. In the box, the lens is mounted with two foam locks. The box is tiny.

YN 50 / 1.8S has metal mount. Stated that microprocessor contacts gilded. The focus ring is wide, plastic. The lens case is made of plastic, but it feels good in the hands. The focus ring has a small transverse play, but does not cause much discomfort.

The weight of the YN 50 / 1.8S is only 146 grams. Light weight goes well with the lightweight Sony NEX / Alpha cameras.

Diaphragm consists of 7 petals, on the strongly covered diaphragms the aperture opening has the shape of a regular heptagon.

There is a bayonet mount mark and a mark on the case for quick installation of the hood. The lens uses a plastic lens hood LH-52T, which is fixed in special grooves located near the front lens of the lens. With the hood in the active position, the front cover is very difficult to install. The lens hood is long enough, optimized for the lens to be used on cropped cameras.

It's important: The hood, in fact, cannot be set to transport mode with the back side. Nevertheless, it can somehow be set into transport mode, but in this position it will not be possible to close the lens with the front protective cover.

I want to note that on the lens itself there is nowhere the inscription 'YONGNUO', characteristic of all previous lenses from this company. Instead of 'YONGNUO' you can now find the inscription 'Ynlens'('YoNgnuo LENS? ','Wi-Lens? '). The same goes for the box in which the lens and instructions arrived. The mention that this is Yongnuo is only in the firmware update utility.

YONGNUO Ynlens YN50mm F1.8S DA DSM

YONGNUO Ynlens YN50mm F1.8S DA DSM


For focusing, the YN 50 / 1.8S uses stepper focus motor DSM (Digital Stapping Motor). Auto Focus should work with all Sony cameras with an E / FE mount.

Focus speed average (closer to high), quite comfortable for work. On camera Sony a3500 I had no problems with focusing at all. After the lens has lost accurate focusing, refocusing is fast enough. The lens is also tested on the Sony α5100 and Sony α6000.

Auto focus silent. In some situations, a characteristic hum appears (as with many stepping focus motors). But still this hum is not very noticeable and rarely appears (it depends on the chosen focusing method and current conditions that affect focusing). While shooting a video using auto focus and a microphone built into the camera, the video may still have a small noise level from the built-in motor. On some cameras in the tracking AF mode during video recording, a small crack may appear from a very frequent change in the direction of focus.

Lens uses electronic focus ring. Focus ring plastic, not rubberized, wide, in manual focus mode rotates approximately two full turns. When extreme positions are reached, the ring does not abut, but continues to rotate. Manual focus is enough conveniently. The focus ring rotates very easily (with one finger). I did not observe delays when changing the direction of rotation. The focus ring during manual focusing makes a faint sound of two rubbing plastic parts. The electronic focus ring is more responsive to its speed of rotation than to a specific angle of rotation, which sometimes creates a tactile inconvenience.

UPDATED: After two weeks of active use in the field and about 5.000 shots, dust fell under the focus ring, after which a characteristic rubbing sound and a characteristic unpleasant tactile sensation appeared.

On the case no focus mode switch. The focus method is set through the camera menu. For manual focus, select the focus mode MF (manual focus) or DMF (direct manual focus) in the camera menu, after which the focus ring will respond to rotation after half-pressing the shutter button.

During auto focus focus ring remains stationaryand can be freely rotated 360 degrees without affecting focus (if the normal AF mode 'Auto Focus' is enabled in the camera menu). During manual focusing, the focus distance scale appears on the display of some cameras.

The lens has internal focusing, the front and rear lenses remain stationary during focusing. It is possible to use various filters without any problems.

The minimum focusing distance is 45 cm, while you can get the maximum magnification for macro photography 1: 7.1, which is the usual value for fifty-fifty lenses.

The YN 50 / 1.8S has the 'Focus Breathing' effect (changing the viewing angle during focusing). During focusing towards the MDF, the viewing angle decreases.

There are no useful marks on the focusing distance, depth of field, or anything else on the lens.

Focus shift (shift-focus) was not noticed during operation and testing.

YONGNUO Ynlens YN50mm F1.8S DA DSM

YONGNUO Ynlens YN50mm F1.8S DA DSM

Firmware update (changed)

There is a USB port on the lens housing of the YN 50 / 1.8S with which you can update the lens software (firmware / firmware). This feature first appeared in Yongnuo 100mm 1: 2 и Yongnuo 40 / 2.8that were presented at the same time.

Unlike previous Yongnuo lenses, for which the program was downloaded separately and new firmware downloaded separately, for the YN 50 / 1.8S you need to use a utility that immediately carries the new firmware.

The functionality of the Yn50mm F1.8 DA DSM FM Updater utility (Update Tool, which is responsible for working with the YN 50 / 1.8S lens, is very meager. You can only see the current firmware version and update it to a new one. I found this utility for my YN 50 / 1.8S here (and at the end of the description here). There is a version of the utility only for the latest Windows operating systems.

A widespread USB 2.0 MICRO-B port is used to connect to the lens (many mobile phones use just that). A USB cable is not included. To connect, I used a USB cable for my Android phone and updated the firmware without any problems. The procedure took less than 10 seconds.

A firmware update, most likely, allows you to improve the compatibility of the lens with new cameras, improve the auto focus, eliminates some other errors. Too bad that no way to roll back (restore) an older version of the firmware.

To upgrade the firmware (software) of the lens:

  • Turn off the camera, detach the lens
  • Launch Yn50mm F1.8 DA DSM FM Updater
  • Attach the lens to the computer using a USB cable. If everything went well, the program will automatically detect the connected lens
  • Click [Start] to start the update. Wait for the update to complete.
  • Disconnect the cable. Done
YONGNUO Ynlens YN50mm F1.8S DA DSM

YONGNUO Ynlens YN50mm F1.8S DA DSM

Image quality

The YN 50 / 1.8S easily handles the 20MP APS-C type Exmor CMOS sensor at the heart of the camera Sony α3500 (ILCE-3500)... Optically, this is a good lens, of the obvious shortcomings - only chromatic aberration. A fairly flat field of sharpness over the entire frame deserves special attention. It’s quite difficult to notice the subsidence of sharpness even in the corners of the image.


  • good sharpness on the open aperture both in the center of the frame and on the periphery of the image, F / 1.8 is fully operational
  • good resolution in the center of the frame on covered apertures after F / 2.8
  • there is no tangible drawdown of sharpness at the edges and corners of the image, even on an open aperture


  • weak, pincushion distortion
  • the nature of distortion is unified, easily corrected in the editor
  • it is difficult to notice distortion in the pictures


  • vignetting is most pronounced on F / 1.8 and focusing on infinity
  • vignetting decreases with focus towards MDF
  • vignetting almost disappears at f / 2.8
  • vignetting is easily fixable in the editor


  • the lens creates a sufficiently large number of chromatic aberrations, both longitudinal and transverse
  • there is a noticeable freezing (color of contrasting zones of blur in green and purple)
  • there is also the so-called blooming - strong and large red-violet halos on highly contrasting elements
  • chromatic aberration - the weakest side of the lens


  • the effect of the rays of the star is not pronounced (14 rays)
  • Blur disks are uneven on tightly covered diaphragms
  • the lens works well in backlight, only in the most difficult conditions can you get glare that spoil the picture
  • the lens does not use aspherical elements, but only ED elements, which helps to avoid concentric circles on blur discs
  • discs of blur closer to the edges of the frame become clipped

There is currently no profile for this lens in popular RAW converters.

YONGNUO Ynlens YN50mm F1.8S DA DSM

YONGNUO Ynlens YN50mm F1.8S DA DSM

Sample Photos

All photos in the review are shown without processing. Camera used Sony a3500... All photos are on-camera JPEG. Picture control 'Standard 0/0/0', multiple pictures in 'Standard 0/1/1'. Functions' Corr. ob .: Shading ',' Corr. about: Chrome. aberr. ' and 'Corr. rev .: Distortion 'have been disabled.

Original JPEG '.JPG' photos can be download from this link (129 photos, 600 MB). Original RAW '.RW2' photos can be download from this link (32 photos, 500 MB). Sony a3500 I can’t shoot exclusively in RAW format, but only in RAW + JPEG or JPEG, because most of the pictures I took were made in JPEG. I have several photos in a little processing at 500px: 1, 2, 3, 4, 5, 6 and instagram: 1, 2, 3, 4.

YONGNUO Ynlens YN50mm F1.8S DA DSM

YONGNUO Ynlens YN50mm F1.8S DA DSM, the lens is shown on a Sony a3500 mirrorless camera

My experience

The YN 50 / 1.8S is similar to its original siblings from Sony - the lens is small, lightweight, no switches, an electronic focus ring, etc.

I have no significant complaints about the image quality, as well as the overall functioning of the lens. The YN 50 / 1.8S has nothing more. This is a cheap and efficient lens.

First of all, the YN 50 / 1.8S is a serious competitor to the original Sony 50 / 1.8 OSS. For modern Sony cameras that have an integrated image stabilizer (Sony a6500, a6600), you can safely buy the YN 50 / 1.8S instead of the more expensive Sony 50 / 1.8 OSS.

Important: The YN 50 / 1.8S has several times fewer minor and not particularly minor problems than fifty dollars from Yongnuo for Nikon and Canon SLR cameras. In this case, with the YN 50 / 1.8S everything is much better, and the YN 50 / 1.8S itself has nothing to do with the fifty dollars from Yongnuo for SLR cameras. Once again, since this really matters: this YN 50 / 1.8S and YN lenses for DSLRs are radically different lenses.

It is difficult to overestimate the creative potential of such fifty dollars. It is suitable for a wide range of photo tasks. Photo enthusiasts often use it as a portrait lens. Many people just want a fast prime, especially in addition to their stock / kit lens. Aperture F / 1.8 more than three steps wider f / 5.6 aperture, which is used on long-end 'dark' whale lenses. In numerical terms, this means that YN 50 / 1.8S is approximately 10 times brighterthan, for example, whale Sony 18-55mm f / 3.5-5.6 OSS or Sony 16-50mm f / 3.5-5.6 PZ OSSwhich use a maximum relative aperture of only 50: 1 over a 5.6 mm focal length. The calculation of the difference in the relative aperture (count the aperture) is performed elementarily: (5.6 * 5.6) / (1.8 * 1.8) = 9.679, which is rounded to the value '10'.

YONGNUO Ynlens YN50mm F1.8S DA DSM

YONGNUO Ynlens YN50mm F1.8S DA DSM

Similar lenses

There are not many similar lenses. For comparison with the YN 50 / 1.8S, I would single out only the original Sony E 1.8 / 50 OSS (SEL50F18) and original Sony FE 1.8 / 50 (SEL50F18F).

Sony FE 1.8 / 50 (SEL50F18F) Sony E 1.8 / 50 OSS (SEL50F18) YN50mm F1.8S DA DSM
Frame size Full Frame FE APS-C, E APS-C, E
Announcement Year 2016 2011 2020
MDF 45 см 39 см 45 см
Max Zoom 1:7.1 1:6.3 1:7.1
Filter diameter 49 mm 49 mm 49 mm
The weight 186 grams 202 grams 146 grams
Focus motor DC (micromotor) linear DSM
Stabilizer No There is No
Aperture min. F / 22 F / 22 F / 16
Aperture Max F / 1.8 F / 1.8 F / 1.8
Focus ring e e e
Aperture blades 7 7 7
Optical design 6/5 (1 ASP) 9/7 8/7 (1 ED)
Type of focus trunk goes out internal internal
Color of the case the black black or silver the black
Price About 250 $ About 350 $ About 100 $

Of the other similar near-fiftys with automatic focus at the time of writing this review, there were only: Tokina 56 / 1.4 | Viltrox 56 / 1.4 | Sigma 56 / 1.4 and two macro lenses: Sigma 60 / 2.8 и Zeiss Touit 50 / 2.8 Macro. All have a much higher price tag.

YONGNUO Ynlens YN50mm F1.8S DA DSM

YONGNUO Ynlens YN50mm F1.8S DA DSM

All Sony E-mount cameras with APS-C sensor

All Sony E lenses for APS-C

Fix Lenses:

  1. Sony 11 mm f/1.8 (announcement) [2022, black, AliExpress price]
  2. Sony 15 mm f / 1.4 G (announcement) [2022, black, AliExpress price]
  3. Sony 16 mm f/2.8 (overview) [2010, silver, AliExpress price]
  4. Sony 20 mm f/2.8 (announcement) [2013, silver, AliExpress price]
  5. Sony 24 mm f / 1.8 ZEISS ZA (overview) [2011, black]
  6. Sony 30 mm f / 3.5 MACRO (overview) [2011, silver, AliExpress price]
  7. Sony 35 mm f / 1.8 OSS (announcement) [2012, black, AliExpress price]
  8. Sony 50 mm f / 1.8 OSS (announcement) [2011, black/silver, AliExpress price]

Zoom Lenses:

  1. Sony 10-18 mm f / 4 OSS (announcement) [2012, black, AliExpress price]
  2. Sony 10-20 mm f / 4 G PZ (announcement) [2022, black, AliExpress price]
  3. Sony 16-50 mm f / 3.5-5.6 PZ OSS (overview) [2012, black/silver, AliExpress price]
  4. Sony 16-55 mm f / 2.8 G (overview) [2019, black, AliExpress price]
  5. Sony 16-70 mm f / 4 OSS ZEISS ZA (overview) [2013, black, AliExpress price]
  6. Sony 18-50 mm f/4-5.6 (overview) [2014, black]
  7. Sony 18-55 mm f / 3.5-5.6 OSS (overview) [2010, black/silver]
  8. Sony 18-105 mm f / 4 G PZ OSS (announcement) [2013, black, AliExpress price]
  9. Sony 18-110 mm f / 4 G PZ OSS (announcement) [2016, black]
  10. Sony 18-135 mm f / 3.5-5.6 OSS (overview) [2018, black, AliExpress price]
  11. Sony 18-200 mm f / 3.5-6.3 OSS (overview) [2010, silver, AliExpress price]
  12. Sony 18-200 mm f / 3.5-6.3 OSS LE (overview) [2012, black, AliExpress price]
  13. Sony 18-200 mm f / 3.5-6.3 PZ OSS (announcement) [2012, black]
  14. Sony 55-210 mm f / 4.5-6.3 OSS (announcement) [2011, black/silver, AliExpress price]
  15. Sony 70-350 mm f/4.5–6.3 G OSS (announcement) [2019, black, AliExpress price]

Third-party autofocus lenses for Sony E APS-C:

Many interesting manual solutions are provided by Chinese manufacturers and brands. 7Artisans, TTartisan, Meike, Neewer, PerGear, Kamlan, Brightin star, Mitakon Zhongyi, Venus laowaFujian, ARTRALABAstrHori other. Autofocus Speed ​​Boosters are also interesting Viltrox Canon EF -> Sony E 0.71X и Metabones Canon EF -> Sony E 0.71X... List of full-frame cameras and lenses Sony FE (Full Frame E) here

YONGNUO Ynlens YN50mm F1.8S DA DSM

YONGNUO Ynlens YN50mm F1.8S DA DSM with hood


The price for YN 50/1.8S is around $100-120, which is a very attractive offer. See prices for YN 50/1.8S on Aliexpress can be at this link.

YONGNUO Ynlens YN50mm F1.8S DA DSM

Aperture blades YONGNUO Ynlens YN50mm F1.8S DA DSM. The lens is mounted on the Sony A3500


The YN 50 / 1.8S is a decent fifty kopeck piece for Sony E APS-C mirrorless cameras. Good value for money. The YN 50 / 1.8S has practically no competitors.

10 main advantages:

  1. low cost (about 100 dollars)
  2. very light weight
  3. compact sizes
  4. metal bayonet mount included
  5. stepping focus motor fast enough
  6. internal focusing, fixed focus ring during auto focus
  7. electronic focus ring, convenient enough manual focus
  8. USB port for firmware upgrade
  9. one low dispersion element in the optical circuit (for example, Sony 50 / 1.8 OSS no special elements)
  10. good optical performance. Moderate level of basic optical distortion (vignetting, distortion, drop of sharpness to the edges and corners of the image, etc.)

10 main disadvantages:

  1. the hood is extremely inconveniently set to transport mode (maybe it can’t be installed like this at all)
  2. the aperture blades are poorly rounded; on heavily covered apertures the aperture has the shape of a heptagon
  3. tiny lateral play of the focus ring, the focus ring is plastic, not rubberized, can catch dust over time and rotate not so smoothly
  4. no built-in image stabilizer (similar Sony 50 / 1.8 OSS he is)
  5. there are no additional tags (depth of field, focusing distance, etc.)
  6. the minimum focusing distance is greater than that of a similar one Sony 50 / 1.8 OSS (important for subject and pseudo macro photography)
  7. software options for working with the lens via the USB port are very limited
  8. lack of lens data in modern cameras and RAW converters, which prevents some types of optical distortion from being automatically corrected
  9. it is not known where and how this lens should undergo warranty service. This is not Yongnuo, but Ynlens. Perhaps the company has problems with patent obligations
  10. some characteristic optical imperfections, such as perceptible chromatic aberration

Comments on this post do not require registration. Anyone can leave a comment. Many different photographic equipment can be found on AliExpress.

Material prepared Arkady Shapoval. Training/Consultations | Youtube | Facebook | Instagram | Twitter | Telegram

Add a comment:



Comments: 36, on the topic: Review YONGNUO Ynlens YN50mm F1.8S DA DSM

  • Rodion

    The chroma is very noticeable, of course. And so - an interesting analogue of 85 / 2.8 lens for FF CZK: even the optical scheme uses ernostar-like.

  • UstasFritZZZ

    For a hundred bucks - a great lens! Autofocus, aperture, lightness. For lovers, to take pictures of flowers, people, objects - the very thing. For the review, as always - thanks, it was interesting!

  • Sergei

    It seems that Yongnuo has embarked on a rebranding path, like 7artisans.
    “7 Partisans” began to produce their most advanced lenses under the TTArtisan brand.

    • Rodion

      Well, the logo and the design in general are simply missing from them)

  • Michael K.

    Thanks for the informative review. I don’t even know, and I apologize a lot, but for me the main subject and the background do not form a single whole, or the background is not from this “opera”.

  • Michael

    Thanks for the review.
    Well, now Sony E has its own "plastic-fiction")
    Bokeh, by the way, seems less distracting than for example the Canon 50mm 1.8 STM (on the open aperture).

  • Anton

    Arkady, is there an opportunity to test this lens on 6000 models? It is interesting how focusing will work with cameras that support phase focusing, on the same sigma, it seems like phase focus points are displayed only in the square in the center of the frame.

  • Koba

    8 elements in 7 groups with one low-dispersion element, no one produces such lenses of their big brands, they still did not have enough to invest so many lenses in a simple lens and even a low-dispersion element and give them to buyers for $ 100 (In China, it costs exactly 100 dollars). Schemes for YN and other lenses, as I already wrote, have been developed for a long time in China, since there is more than enough power and specialists here. it is sheer trifles to calculate new schemes for such lenses, since the most sophisticated optical instruments for the military-industrial complex and astronautics are being developed in the same centers. Personally, I think that while we see the first shoots of new lens building in China, we will see really excellent lenses in 10 years, mainly for Sony and Fuji, since sales of other mirrorless systems are still at a microscopic level. Now Kenon has taken the path of an outsider in this segment - he is trying to release a camera based on the principle of “push everything we can” in order to surpass Sony at a technical level and not lose the rest of the parish of his own church, but their weakness remains the lack of support from third-party manufacturers. and their own lenses and systems in general are terribly expensive. Nikon will do something similar too, I think. But they will lose, because after this deepest crisis of capitalism (and not a virus!), Unfortunately, the volume of commercial photography services will slide down a notch, and expensive toys and unnecessary 8k won't bother anyone (an ordinary person has enough FHD, but 4k even covers the needs of most professionals). Hopefully YN and Viltrox will someday release a 16mm APSC lens with normal manual control and distance marking.

    • Roman

      And characteristically, the crisis of capitalism began in China. Do not rush to bury either capitalism or Canon - they will survive many more.

      • Koba

        a very interesting thought about the crisis of capitalism in China, where more than 70% of all production and more than 85% of capital turnover belongs to the state, which is controlled by one party - the CCP. There is a crisis in China, that's right, I have been living here for the last 15 years, but it is not as wild as in other countries, moreover, in most places it is felt here very modestly, anyone can come and see with their own eyes, although it is not easy , for this you need to travel around the country constantly, to meet with various people and companies, to have the opportunity to visit institutions, government agencies, at meetings with both officials and representatives of various strata, classes of the people. I also do not always manage to do all this, but on the other hand, I have to travel up to 50000 kilometers by land transport a year and hold more than 80 different meetings on various topics, talk with people and somehow understand their interests. After this virus, even fewer people here began to trust private companies, because what does their state protect? In addition, Chairman Xi returned to the constitution two clauses of their Stalinist constitution, Russian observers also noticed this, so there is a crisis in China in its capitalist part, and there is progress in its socialist part, and the people, by the way, clearly support the latter. If anyone has a real interest in this issue, come, I promise that I will take you to places where 99% of foreigners never get, I will try to show you at least a part of real China, and not submitted by foreign bloggers and the media on the Internet. And finally, here in 95% of cities everything returned to normal

        • Not a bot

          What ???? what other socialism in 2020?)))) Koba ... well, by God))))

          • Valery A.

            Ask Kim Jong In.

  • Valery Nazarkin

    The lens is nice, but there was a feeling of some kind of granular structure of the picture, in principle it is typical for Sony, but I did not think that on the A3500 it would be so much noticeable even on the ISO 200

  • Pawel

    In a word Wai-Wai Lens. Where camera manufacturers can’t make a cheap lens, the Chinese are using it) thanks for the informative review, I found out that the youngsters are making a camera with a boot mount, I'm waiting for a review.

  • Nicholas

    And it is planned to release something wider (35 mm for example) on Sony

  • Yesenia

    People, share the firmware, all the links to update this lens that I could find on the Internet are inactive :( PS Super review! Thank you !!

    • Yesenia

      I thought about it, I didn't write it correctly * People, HELP with the firmware, all the links to update this lens that I could find on the Internet are not active :( PS Super review! Thank you !!

      • Arkady Shapoval

        Last here.

    • Arkady Shapoval

      Last here.

      • Yesenia

        Thank you very much!!

  • Eugene

    Thank you for your work !!

  • Arkady Shapoval

    Added a video to YouTube about all Yongnuo lenses (generations, lines, etc.) https://youtu.be/AfQ76sAwIac

  • Eugene

    Thank you!! maybe I'll buy it !!

  • Sergei

    Hello, I still wanted to clarify about the firmware. It was said here: it's a pity that there is no rollback option, maybe you shouldn't flash, do I have a Sony A6000?

    • Arkady Shapoval

      If everything suits you, then it is better not to risk it

  • Sergei

    I am a beginner, I would like expert advice.

  • Serg

    minus glasses YONGNUO 50mm is a bokeshka it is not tasty and not interesting. it is worse than Nikorov's.
    plus this is the price of course.
    although what for the lens is not tasty cheap? right is not needed.

    • Michael

      Well, here, as they say, everyone has their own taste ... Well, under threat of life, no one is obliged to buy "tasteless" ...

  • Artem

    When is Full Frame already ?? - Eastern brothers, you have one hope

    • Arkady Shapoval

      there are 35 and 85 for full

  • Nicholas

    Hello, please tell me, where is the specific link for the utility on the Chinese site, I did not find anything similar ..

  • Anton

    The lens is good. But I ran into a problem that the lens is not initialized on the camera (a6000), i.e. focus does not work and the camera does not see it. Helps or remove to put on the lens or pull out the battery. The firmware is the last one. There was also a suspicion that it was planting the battery on the camera in the off state, but it did not seem to be confirmed.

  • Oleg

    Arkady, have you tested it in video mode?

  • alex497

    After reading the reviews I decided to buy. What a great regret having received it today.
    Yes, it costs less than Sony. But it is just as (if not more) worse in every way.
    On Nex 5, at first it refused to be recognized. After reinstalling, it worked but does not focus normally. In short, it is impossible to use it with Nex 5 at all.
    I thought he was defective. It turned out not. It's just that this is the level of Made in China.
    It worked on the A5000, but ... Pre-focusing does not work, it constantly walks back and forth and stops for a while, but not at all where you need it.
    The focus works but often it fails to focus if the object is uniform in color. That is, if the focus is on a point and there is a white door in the center of the screen, then everyone ... has arrived.
    If you shoot a video, it just loses focus from time to time and reconfigures.
    As a result, it is not suitable for video.
    Distortion compensation does not work for him either.
    The firmware seems to be the latest one (17)
    As a result, it is suitable for a limited range of tasks - when a large aperture is needed, and the subject and lighting are static, and there is time to manually adjust the focus if necessary.
    Camera compatibility questionable. In short, it's quite possible to take a portrait.
    It is also impossible to return it just like that to Aliexpress. Sell? And if it turns out to be incompatible with the buyer?
    It would be better if I immediately bought Sony \ Tamron \ Sigma and did not succumb to fairy tales about the great Chinese miracle.
    Miser pays twice.

    • Andrii

      Like it's unbearable.

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