YONGNUO 25mm 1: 1.7 STM ASPH Review (Model YN25mm F1.7M for Micro 4/3)

According provided by YONGNUO 25mm 1: 1.7 STM ASPH lens huge thanks directly company Yongnuo.

YONGNUO 25mm 1: 1.7 STM ASPH (Model YN25mm F1.7M for Micro 4/3)

YONGNUO 25mm 1: 1.7 STM ASPH (model YN25mm F1.7M for Micro 4/3). increase.


  1. In short
  2. History
  3. All lenses from Yongnuo
  4. Main Specifications
  5. Assembly
  6. Focusing
  7. Image quality
  8. Sample Photos
  9. My experience
  10. Similar lenses
  11. Price / where to buy
  12. Video review
  13. Results
  14. User Comments
  15. Add your review or question on the lens

In this review, I will refer to the YONGNUO 25mm 1: 1.7 STM ASPH lens for short. Yongnuo 25 / 1.7.

YONGNUO 25mm 1: 1.7 STM ASPH (Model YN25mm F1.7M for Micro 4/3)

YONGNUO 25mm 1: 1.7 STM ASPH (Model YN25mm F1.7M for Micro 4/3)

In short

Yongnuo 25 / 1.7 is a fast auto focus prime lens for Micro 4/3 system. Primarily intended to serve as a standard lens for every day for a wide range of photographic tasks. It is suitable for Panasonic and Olympus Micro 4/3 system cameras, as well as other brands that create their photo and video cameras based on the Micro 4/3 (Kodak, Xiaoyi, Blackmagic, yongnuo etc.)

In general, the lens is not bad. Of the obvious advantages: confident operation at F / 1.7, focusing stepper motor, light weight and very low cost.

First of all, Yongnuo 25 / 1.7 is an alternative for the original PANASONIC LUMIX G 1: 1.7 / 25 ASPH (about 250 $) и OLYMPUS M.ZUIKO DIGITAL 25mm 1: 1.8 MSC (about $ 400).

Of the obvious shortcomings: incompatibility with some cameras (mostly old models) and noisy operation of the diaphragm mechanism.

Important: reliably knownthat Yongnuo 25/1.7 will work correctly with Panasonic G100, GH5, G9, G95, G85, GX9, GX85, GF10, GF9, GF8 and Olympus E-M5 Mark II, E-M10 mark III, E-M10 IV cameras, E-PL9, E-PL10, PEN-F. How he will lead with other models is unknown. Important: with M10 Mark III stabilizer does not work.

YONGNUO 25mm 1: 1.7 STM ASPH (Model YN25mm F1.7M for Micro 4/3)

YONGNUO 25mm 1: 1.7 STM ASPH (Model YN25mm F1.7M for Micro 4/3)


October 14 2019 year was officially announced YONGNUO 42.5mm 1: 1.7... It was the first lens from Yongnuo for the Micro 4/3 system.

В late summer 2020 the lens was officially introduced Yongnuo 42.5 / 1.7 II, which is an improved, modified version of the previous YONGNUO 42.5mm 1: 1.7.

Yongnuo 25 / 1.7 was officially presented в early February 2021 and became the third lens from Yongnuo for the Micro 4/3 system.

The company has 2 cameras with Micro 4/3 mount: YN450 M4 / 3 (introduced January 2021) and YN455 (Introduced July 2021).

YONGNUO 25mm 1: 1.7 STM ASPH (Model YN25mm F1.7M for Micro 4/3)

YONGNUO 25mm 1: 1.7 STM ASPH (Model YN25mm F1.7M for Micro 4/3)

All Yongnuo Lenses

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

  1. yongnuo 16 mm 1:1.8 DA DSM S [announcement]
  2. yongnuo 35 mm 1: 2 DF DSM S [review]
  3. yongnuo 50 mm 1: 1.8 DF DSM S [announce]
  4. yongnuo 50 mm 1:1.8 DA DSM S [overview]
  5. yongnuo 85 mm 1: 1.8 DF DSM S [review]
  6. 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 50mm 1:1.8 DF DSM R [to be announced]
  3. yongnuo 85 mm 1: 1.8 DF DSM R [review]

Bayonet mount Nikon Z (mirrorless full frame):

  1. yongnuo 35 mm 1:2 DF DSM Z [announcement]
  2. yongnuo 50 mm 1:1.8 DF DSM Z [announcement]
  3. yongnuo 85 mm 1:1.8 DF DSM Z [announcement]

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

  1. Yongnuo 50mm 1: 1.8 DA DSM X Pro [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]
  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 25mm 1: 1.7 STM ASPH (Model YN25mm F1.7M for Micro 4/3)

YONGNUO 25mm 1: 1.7 STM ASPH (Model YN25mm F1.7M for Micro 4/3)

Main Specifications YONGNUO 25 F1.7 STM ASPH

Review Instance Name On the body: YONGNUO 25F1.7 STM ASPH 0.2m / 0.66ft 0.2x STM ASPH

Near the front lens: Yongnuo Ø52mm

Mount side: serial number

Basic properties
  • M4 / 3 - lens designed for Micro 4/3 cameras
  • SMT / STM - focusing stepper motor
  • AF / MF - focus mode switch
  • FTM - continuous manual focus control
  • ASPH - aspherical elements in the optical scheme
  • Electronic focus ring
  • Internal focus
  • Multi-Enlightened Optics
  • Metal mount
  • Important: lens from a third-party manufacturer, which imposes some restrictions on its practical use
Front Filter Diameter 52 mm, plastic thread for filters
Focal length 25 mm, EGF is 50 mm
Zoom ratio 1 X (this is a fixed lens, it does not have a zoom)
Designed by for cameras of the Micro 4/3 system
Number of aperture blades 7 rounded petals
Tags Bayonet Mount Only
Diaphragm F / 1.7 to F / 22
MDF 0.20 meters, maximum magnification ratio 0.2X (ratio 1: 5)
The weight
  • in the instructions 150 grams (without caps)
  • according to my measurements 147 grams without caps
  • according to my measurements 168 grams with lids
Optical design 7 elements in 6 groups. The circuit includes 1 Yongnuo ED element and 2 aspherical elements

YONGNUO 25mm 1: 1.7 STM ASPH schematic (YN25mm F1.7M model for Micro 4/3)The optical scheme from a distance resembles PANASONIC LUMIX G 1: 1.7 / 25 ASPH

Lens hood Screws into the thread of the front filter, type unknown
Manufacturer country MADE IN CHINA (Made in China)
Period Since early 2021

Y0ngnuo refers to the Yongnuo 25/1.7 as a 'STANDARD FIXED FOCAL LENS' lens. In terms of full frame EGF the lens is 50 mm, and the equivalent aperture in the understanding of the depth of field is F / 3.4, as a result, in terms of viewing angle and depth of field, this lens is close to full-frame 50 / 3.4.

Some Olympus models will have an in-camera stabilization system to make the Yongnuo 25 / 1.7 even easier to use.

YONGNUO 25mm 1: 1.7 STM ASPH (Model YN25mm F1.7M for Micro 4/3)

YONGNUO 25mm 1: 1.7 STM ASPH (Model YN25mm F1.7M for Micro 4/3)


The lens came to the review completely new.

In a small box was a warranty card, instructions in Chinese and English, a certificate of quality control, a desiccant 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 cardboard holders.

Yongnuo 25 / 1.7 has metal mount... The focusing ring is very wide, plastic.

The weight of the Yongnuo 25 / 1.7 lens is about 150 grams. Original PANASONIC LUMIX G 1: 1.7 / 25 ASPH. и OLYMPUS M.ZUIKO DIGITAL 25mm 1: 1.8 MSC... weigh a little less.

Diaphragm consists of 7 blades; on heavily covered apertures, the aperture has the shape of an irregular heptagon. During the closing / opening of the blades, the diaphragm is very noisy and has a small lag. Aperture noise on models Yongnuo 42.5mm 1: 1.7 и Yongnuo 42.5mm 1: 1.7 II much lower.

The hood is not a bayonet type and must be screwed into the thread of the front filter. The instructions do not indicate the marking of the original hood. It is not known which hood will fit this lens. The Yongnuo 25 / 1.7 has problems in the backlight, and therefore using a hood would be very desirable.

The design of the case is laconic, simple, pleasant in appearance, very similar to the design Yongnuo 42.5mm 1: 1.7 II.

It's important: During shooting under the scorching sun on a very hot day, the lens lost contact with the camera several times. Turning off the camera and reinstalling the lens fixed the problem.

YONGNUO 25mm 1: 1.7 STM ASPH (Model YN25mm F1.7M for Micro 4/3)

YONGNUO 25mm 1: 1.7 STM ASPH (Model YN25mm F1.7M for Micro 4/3)


For focusing, Yongnuo 25 / 1.7 uses Yongnuo STM focusing stepper motor (the manual specifies a motor of the 'SMT' type). Auto focus should work with all Micro 4/3 cameras.

Focus speed average, quite comfortable for work, does not cause discomfort. On camera PANASONIC LUMIX DMC-GF2 I didn't have much focusing problems. The tenacity and focusing speed will most likely depend on the specific camera used.

Auto focus is very silent... The noise level during photo and video shooting is the same.

Lens uses electronic focus ring. The focus ring is plastic, wide, in manual focus mode it rotates approximately two to three full turns (depends on the rotation speed). When the extreme positions are reached, the ring does not rest, but continues to rotate. Focus manually very comfortably... I did not observe a delay when changing the direction of rotation. The focusing ring, during manual focusing, emits a perceptible and characteristic sound of two rubbing plastic parts.

There is a 'AF-MF' (auto focus / manual focus) mode switch on the lens body. During auto focus focus ring remains stationaryMoreover, it can be freely rotated 360 degrees without any effect on focus (if the corresponding function is enabled in the camera menu). Lens supports continuous manual focus controlbut only if allowed by the camera settings.

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 only 20 cm, while you can get the maximum magnification for macro photography 1: 5, which is very, very good and better than similar PANASONIC 25 / 1.7 и OLYMPUS 25 / 1.8.

The Yongnuo 25 / 1.7 has a noticeable 'Focus Breathing' effect (changing the angle of view while focusing). When focusing towards the MDF, the angle of view decreases.

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

Interestingly: the lens has a huge infinity flight (sample shot with focusing to infinity turned all the way out).

Important: this is a third party lens. It may happen that it will not work on some cameras. For example, Yongnuo Yongnuo 25 / 1.7 may not be recognized by some cameras. Or, for example, on the camera PANASONIC LUMIX DMC-GF2 AF / MF switch does not work, lens always uses auto focus, even with switch set to 'MF' position. But you can enable manual focus through the camera menu. Due to the presence of constant manual focus control, this drawback does not spoil the overall impression of the lens.

YONGNUO 25mm 1: 1.7 STM ASPH (Model YN25mm F1.7M for Micro 4/3)

YONGNUO 25mm 1: 1.7 STM ASPH (Model YN25mm F1.7M for Micro 4/3)

Image quality

Yongnuo 25 / 1.7 easily handles 12MP CMOS camera sensor PANASONIC LUMIX DMC-GF2.


  • good sharpness at the open aperture in the center of the frame
  • in the corners of the frame, sharpness becomes acceptable after F / 2.8
  • in the corners of the frame, sharpness becomes good after F / 4 (there are no complaints at all about sharpness in the corners, which is very, very good)
  • good resolution in the center of the frame on covered apertures in the area of ​​F / 2.5
  • great resolution in the center of the frame on covered apertures in the area of ​​F / 4


  • distortion is weak, barrel-shaped
  • the nature of distortion is unified, easily corrected in the editor


  • there is perceptible vignetting
  • vignetting is strongest at F / 1.7 and focusing at infinity (example)
  • vignetting decreases with focus towards MDF
  • vignetting almost disappears at f / 2.8-4
  • at closed apertures, the center of the frame becomes slightly darker than the periphery of the frame (abnormal vignetting behavior)
  • vignetting is easily fixable in the editor


  • chromatic aberration fixed well
  • general level HA is on a par with similar quality lenses
  • there is a small friging (color of contrast zones of blur in green and purple)


  • the effect of the rays of the star is not pronounced (14 rays, example)
  • Blur disks are uneven on tightly covered diaphragms
  • the lens does not work well in backlight, in difficult conditions you can get an abundance of artifacts
  • at the edges and corners of the frame, the discs of confusion at F / 1.7 turn into lemons, the bokeh is slightly twisted (example)
  • concentric 'bulbous' grooves on discs of confusion due to the use of aspherical elements (example)

There is still no profile for this lens for popular RAW converters.

YONGNUO 25mm 1: 1.7 STM ASPH (Model YN25mm F1.7M for Micro 4/3)

YONGNUO 25mm 1: 1.7 STM ASPH (Model YN25mm F1.7M for Micro 4/3)

Sample Photos

Photos in the gallery below were taken with a camera. PANASONIC LUMIX DMC-GF2.Jpeg straight from the camera. A planar-like picture is felt. Some photos were taken using a polarizing filter. GREEN.L CPL 52mm.

Original JPEG '.JPG' photos can be view / download from this link (gallery on Goodle Drive, 130+ photos). Original photos in RAW format '.RW2' can be downloaded or viewed at this link (gallery on Goodle Drive). Per PANASONIC LUMIX DMC-GF2 many thanks to the store profotosale.com.ua.

YONGNUO 25mm 1: 1.7 STM ASPH (Model YN25mm F1.7M for Micro 4/3)

YONGNUO 25mm 1: 1.7 STM ASPH (Model YN25mm F1.7M for Micro 4/3)

My experience

The release in 2021 of a lens for a Micro 4/3 system from a third-party manufacturer was a little surprised. Most likely the release of Yongnuo 25 / 1.7 is partially related to the release of its own camera. Yongnuo YN455 for Micro 4/3 system.

Yongnuo 25 / 1.7 is a simple, cheap and quite usable lens. Much like his older brothers Yongnuo 42.5mm 1: 1.7 и Yongnuo 42.5mm 1: 1.7 II.

Yongnuo 25 / 1.7 is a kind of affordable fifty dollars for the MFT system (Micro 4/3). It is optically better than inexpensive manual similar solutions, for example, 7Artisans 25 / 1.8 or PERGEAR 25 / 1.8.

In my opinion, Yongnuo 25 / 1.7 has only one serious problem - the original PANASONIC 25 / 1.7 on the secondary market it costs about $ 150, which is only slightly more expensive than the new Yongnuo 25 / 1.7.

Fun moment: on the box the inscription '0.19m / 0.6ft 0.2X' is sealed with a label of the corresponding color with the inscription '0.2m / 0.66ft 0.2x'. Apparently, the original design had slightly less MDF.

Yongnuo 25 / 1.7 can be conditionally attributed to the third generation of lenses from Yongnuo (watch this video). This generation includes fairly high-quality solutions.

YONGNUO 25mm 1: 1.7 STM ASPH (Model YN25mm F1.7M for Micro 4/3)

YONGNUO 25mm 1: 1.7 STM ASPH (Model YN25mm F1.7M for Micro 4/3)

Similar lenses

There are not so many such fast auto focus lenses for Micro 4/3:

  3. LEICA D SUMMILUZ 1: 1.4 / 25 ASPH.
  4. LEICA DG SUMMILUZ 1: 1.4 / 25 ASPH.
  5. PANASONIC LUMIX G 1: 1.7 / 25 ASPH.
  6. SIGMA 30mm 1: 1.4 DC DN | C (there is a version for Micro 4/3)
YONGNUO 25mm 1: 1.7 STM ASPH (Model YN25mm F1.7M for Micro 4/3)

YONGNUO 25mm 1: 1.7 STM ASPH (Model YN25mm F1.7M for Micro 4/3)


Price for Yongnuo 25 / 1.7 is around 100-110 dollarswhich is a very attractive proposition. You can see prices for Yongnuo 25 / 1.7 on Aliexpress to Yongnuo Authorized Dealer at this link.

YONGNUO 25mm 1: 1.7 STM ASPH (Model YN25mm F1.7M for Micro 4/3)

YONGNUO 25mm 1: 1.7 STM ASPH (Model YN25mm F1.7M for Micro 4/3)

Video by lens



Yongnuo 25 / 1.7 is an inexpensive high-aperture standard fix for Micro 4/3. There are several childhood illnesses, but overall, the Yongnuo 25 / 1.7 has a very good value for money. Most importantly, the lens is good in the center of the frame at F / 1.7.

10 main advantages:

  1. low cost (about 110 $, for example, the price of the original OLYMPUS 25 / 1.8 is about $400)
  2. light weight, metal mount
  3. quiet focusing stepper motor
  4. internal focusing, fixed focus ring during auto focus
  5. there is a possibility of constant manual control
  6. small MDF, good ratio of maximum magnification for shooting at close range
  7. there is an AF / MF focusing mode switch (similar PANASONIC 25 / 1.7 и OLYMPUS 25 / 1.8 no switch)
  8. not bad aperture (the relative aperture is 12% larger than that of a similar OLYMPUS 25 / 1.8)
  9. one low-dispersion element and 2 aspherical elements in the optical scheme
  10. good optical performance. Moderate level of basic optical distortion (aberration, distortion etc.)

10 main disadvantages:

  1. there is a complete incompatibility with some old cameras (the lens is not recognized by the camera)
  2. AF / MF focus mode switch does not work with some cameras (lens always uses autofocus)
  3. no hood included; non-bayonet type hood
  4. the diaphragm control makes a noticeable noise
  5. there are no additional tags (depth of field, focusing distance, etc.)
  6. original lenses are more compact and with a smaller filter diameter (52 mm for Yongnuo 25 / 1.7, versus 46 mm for PANASONIC 25 / 1.7 и OLYMPUS 25 / 1.8)
  7. at high ambient temperatures, the lens may lose communication with the camera (may partially depend on the camera used)
  8. no USB port for firmware updates (many other lenses from Yongnuo have this option, for example, 50 / 1.8S DA DSM)
  9. the maintainability and endurance of the lens is unknown
  10. poor backlight resistance, noticeable vignetting at F / 1.7
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Material prepared Arkady Shapoval. Training/Consultations | Youtube | Facebook | Instagram | Twitter | Telegram

Add a comment:



Comments: 37, on the topic: Review of YONGNUO 25mm 1: 1.7 STM ASPH (model YN25mm F1.7M for Micro 4/3)

  • Oleg

    It is immediately evident on the site that there are many owners of micra. Yagno tries to breathe a second wind into the world

    • Arkady Shapoval

      Relatively. IN group on FB news of the new Yongnuo 455 people clearly liked it,

      • Oleg

        Yes, I read, in principle, young people can enter a smartphone and a 2-in-1 camera, for instagram they don't need it anymore. You put some sort of snapseed for processing and do not bother with processing on your computer. Lacks a wide angle in the Yagno line or the stock zoom

  • Oleg

    In principle, there is not enough small dark 12-25, and so there is fifty dollars, 85 is

  • Oleg

    And all this is really cheap and compact to have 50 and 85mm in your pocket at a price of $ 200 for all this is cool. The grip is of course cut down, but for social networks there is enough blur

  • Ilyas

    will not work on the E-M10 mark II? ((

    • Arkady Shapoval

      Unknown :)

  • Denis

    To anyone interested, I can confirm that this lens is compatible with at least the Olympus Pen E-PL5 and I assume that the above will also be compatible with newer models ..

    • Arkady Shapoval

      Thank you

    • Denis

      More Compatibility Information:
      Olympus Pen E-PL1 - not compatible, the camera cannot see the lens.
      Panasonic Lumix G2 - compatible !!!, the glass is fully working (despite the fact that Yong 42,5mm is not compatible with this camera, 25 has surprisingly worked with a bang!)

      • Alexander

        What is your impression of the lens on the Panas? At the very old man G2 and Olya 10 Mark II. I thought at first to take an artisan. Then pergear, because it is cheaper, and now, after reading the reviews, I thought to take an even cheaper andoer. And then I came across a 25mm f1.7 yagno. Now is the dilemma worth spending on autofocus yagno or is it an Andoer? Who would make a direct comparison of them with examples of pictures. I'm not afraid of a manual lens - there is a Helios 44-3 on the Panas and I enjoy shooting it in the manual. But I wanted a wider angle. There is little price difference between Artisan and Yagno. And I would take it for sure. But andoer costs 2 times cheaper than yagno. And then the thoughts about the difference in the quality of the pictures with these lenses and the advisability of overpayment already begin.

  • Rostislav

    Does Olympus focus bracketing work?

    • Alexander

      Focus bracketing in 10 mark II works

      • Rostislav

        Thank you, I also have 10 μ2.)

  • Michael

    Panas 25mm new costs about $ 150, and in the secondary market for 150-200 you can take an olik

    • Alexander

      We have a used Panas in Belarus 175 $. And Summilux is almost $ 400 used. I don’t even want to mention Olympuses in prices, it’s generally off the charts.

  • Andrei

    Thanks for your review! The question is - is the OMD-10 and OMD-5 suitable for the old Olympus?

    • Arkady Shapoval

      Most likely, hardly anyone will tell you. It seems to work on Oliki

  • Eugene

    I just bought a yongnuo 25mm 1.7m for mikra. The price is 6500 rubles. Everything is as it should be, a branded box, instructions ... the seller also put in a hood and a protective filter and a few more nishtyaks Yes ... bought with Ali ... of course a new one, the fly did not sit on it. Everything seems to be good ... and the autofocus is accurate and the aperture switches as it should ... but I noticed one jamb.
    on my body Olympus om-d e-m10 ii (there is a built-in 5-axis stabilizer) this lens does not have stabilization. That is, at low shutter speeds, blur appears from shaking hands ... on a kit lens at the same shutter speeds, everything is fine.
    This is kind of normal, everyone has bought such a lens or was I just “lucky”?
    Can I open a dispute with the seller with this joint? But I don’t know how to prove it ...
    Who faced this write pzhlsta
    Thanks in advance

    • Arkady Shapoval

      Most likely this is the case for everyone. Most likely you will not win the dispute, because the E-M10 mark II model is not among those supported by the officials. (Look the sign at the end of this page)

      • Maksim

        The stub also did not work on the top ten mark III. I tried this glass in dns. I like everything in the picture, but this is not a working stub ((

        • Arkady Shapoval

          Thanks for the information!

          • Maksim

            I wrote to the manufacturer, I wonder what they will answer. Judging by the reviews on Ali c Olympus Pl-9, the stub does not work either

          • Maksim

            I wrote to the manufacturer, they say there is a problem with the lens firmware, they will deal with the issue after their new year. Will let you know when something is known. But as I understand it, the new firmware will only be in new lenses, it’s without a USB connector, you probably won’t be able to flash it yourself.

    • Albert

      Try turning on the stabilizer in manual mode by specifying the focal length. At the very Em10m2, I also look closely at this glass

  • Eugene

    I may not understand something ... because I only comprehend the world of photography ...
    But it seemed to me that if I became in a carcass, then I don’t care what kind of lens ... third-party, or generally Soviet with an adapter, all exactly it will stabilize the picture. Or am I wrong?

    • Arkady Shapoval

      In the case of chipped lenses, there may be conflicts

    • Rimma

      it is necessary to manually set the focal length of the lens in the stabilization settings, then it will be better.

  • Eugene

    Thank you

    • Maksim

      What did you find out from the stub? Did you open a dispute? Today I watched this glass in the dns, the stub does not work even at ten-thirds.

  • Salavat

    someone checked compatibility with GH4?

  • Michel_7

    In the presence of PEN E-P5, complete 14-42mm f / 3.5-5.6II and fix TTartisan 35 / 1,4. Advise whether it is worth adding yongnuo 25mm 1.7m to a heap in a small bag for non-professional shooting in field conditions for a family album and photos for friends/colleagues?

    Sincerely, Michelle.

    • Arkady Shapoval

      to 35 1.4 it doesn't make much sense. But if you really want to, then you can

      • Michel_7

        It’s not that I really want to, either I haven’t “straightened” my arms yet, or I don’t have enough experience ... but so far 50% of the frames from the fix are out of focus ... .. I just don’t have time to visit ... although this is caught even in static landscapes (I understand that the 35th is not for this) …. maybe not take it from home and leave it for home use :)

        • Victor

          It makes sense to take an autofocus “poltos” not in addition, but as a replacement for a manual ttart.


    Feedback on Ali about the non-working stub on the PL-9 -My!
    I bought this lens after reading this article.
    It seemed more interesting than a similar, cheap Panasonic. The picture is more interesting.
    In addition to the non-working stub, the lens has a number of other features.
    1) MDF turned out to be about 15 cm, which is not bad.
    2) The lens focusing system is somewhat rough and clearly does not support 121 points on the PL-9. There is some coarsening of focus, but not critical.
    3) - Perhaps one bug follows from the previous paragraph ..
    the lens sometimes cannot focus on a small, low-contrast object, while
    the focus confirmation is triggered and the picture is taken, but everything is out of focus, that is, it did not focus on another plane, but simply went out of focus and that's it.
    It is treated by focusing on the distant plan and then again on the near. You may need to do this three or four times, after which it suddenly comes to life ..
    It happens with pale objects in cloudy weather at a distance of up to one meter.
    Perhaps it conflicts with the camera settings, I'll try to catch the reason.
    4) The sharpness of the lens is a kind of “large”
    Let me give you an analogy.
    If the standard Olympus lenses have a sharpness radius of 02, then for YONGNUO it is closer to 1.5
    That is, the sharpness is more contoured. This works effectively on close-ups, but can become a problem for landscapes, for example ... I used to think that this lens was so contrasting, but after living with it for half a year I realized that this contrast rests on sharpness and sometimes it’s very difficult to separate them. Such “contouring, such as clarity, is not always on topic
    and remove it for post-processing will not work.
    TOTAL: I wanted a universal fast lens, but I got a creative one
    lens with nuances. Oddly enough, I have no hard disappointment.
    The lens has its own habit with which you interact. You start to slip him stories that he can embody. You move your brains)) In this Chinese glass there is some kind of living soul (possibly Chinese) It is interesting to communicate with this soul.
    As the only lens - NO. One of my favorites - YES!
    PS By the way, it’s good for a BW photo, there’s even something vintage ..

    • B. R. P.

      Interesting details.

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