Fuji 18-55 Blinking evf after depressing shutter

Hello!

I bought Fuji 18-55mm 2.8-4 (Philippines) today from a kit, it works fine, Autofocus is fine and also OIS. Latest firmware 3.23 updated.

FUJIFILM xh1 latest firmware.

I know that usually when you are in A priority mode the iris move constantly by itself and then open when you half depress the shutter. But, when I release the shutter button the corners of image blink for several times, become darker for a while and then stops. Seems the iris to behave slow than usual when it has to close again to give me the image preview causing kind of flickering (tried flickering option, nothing change), it's really annoying. Only in manual mode with simple preview (no awb) doesn't happen, most of the time I use Aperure priority and it's distracting, if there is strong light and I set wide aperture value if I lock focus and then depress the shutter it blinks 5/10 times for sure, it's bad.

Just want to know if normal for the lens or a bad copy, thank you 🙂

Artur Darulewski wrote:

I've been using my 18-55 with X-T20 and X-T3 for few months and never had similar issues with this and any other lens. I must admit that I haven't updated firmware in my lenses (as the latest lens FW are mostly related to the improve IBIS support with X-T4).

Both cameras have the lastest FW.

I wish I was wrong, but symptoms you described look like camera malfunction or communication problem between body and the lens. If don't have similar issues on any other lens, then you should check your 18-55 with another body...

I wonder whether this can be related to to lens FW?

Good luck,

Artur

Honestly can't try another body and firmware are up to date on both body and lenses, can't try now older software version. Is just a peripheral blinking, I do not lose the image, it's a bit annoying by the way. The iris seems to works correctly and in low light no problem. If I use a more close aperture I can listen the usual open and close sound of the iris but no blinking in the corners.
The problem occurs when I use wide aperture on a sunny day, I have the exposure preview on (or just in A mode also) the camera as usual keep tryin to close the aperture to get the right exposure preview, then you half press the shutter.. when you leave it the little very fast blinking in the corners starts like the iris is more lazy to come back to its normal behavior (like the A Aperture stepping problem with video). I can shoot fast no problem, just wondering if is it normal in this specific scenario also for you guys

mmh.. can be the "live view highlight alert"?
I've enabled it last week for video and manual exposure, can be the blinking caused by it, because in that short period of time the camera open and close the iris getting a bit overexposed live view when there is a huge amount of light around (the blink is just the alert then), right?
I'll do some tests, just a little doubt.

a_c_skinner wrote:

I am sure you are right. It would have been my suggestion from what you described in the first posting.

Is it the Live View Highlight Alert?

The blinking is a very fast kind of shadow on the corners of the image.

Artur Darulewski wrote:

That could be an explanation to me...

You can just turn this option off and see if it helps.

Cheers,

Artur

Sadly is not that option. It's the iris which close again in 4-5 steps creating the flickering as I can see under bright light (in a slower way, even if usually it can do it faster on other situations), but everything else is fine. Also your unit does the same under bright sun with A priority? Only in AFS because in AFC of course the iris doens't move.
Only in manual mode with standard preview (no AWB) I'm fine, on every other mode it's annoying every time you leave the shutter to re acquire focus again you get this flicker under bright light, that's the specific situation when it happens. Can you do a test for me?

I just have to clean the camera and lens contact, just want to know if it is the same for other people and verify if it is a problem or a common behavior.

Artur Darulewski wrote:

Hi Mike,

I did several tests with Auto, Manual and Aperture priority exposure settings, but I wasn't able to reproduce this issue. Even, when I barely heard aperture blades chatter, my EVF didn't blink (didn't see that on back screen as well). I tried to release half-pressed shutter button as quick as I can, but no such effect.

Maybe I did something in a different way, maybe the difference lies in a settings or fimrware. I did my tests on XT20 (to check the same sensor) but it's still different camera than your X-H1

Liveview highlight alert was turned on (of course) and it's normal, that overexposed areas are blinking all the time, but it isn't related to pressing shutter and doesn't depend on exposure mode.

I wonder if difference the light conditions plays a big role here.

BTW, my copy of 18-55 is also made in Phillipines.

Cheers,

Artur

Thank you, I'm also running new xh1 2.10 firmware but nothing has changed.

The problem occurs only on bright day in these specific mentioned mode, it's not a evf blackout, just the corners becomes darker with a kind of blinking for a while, and you hear the typical sound of the iris moving like usual, but seems slower while closing automatically to match the exposure preview value. The strange fact is that is able to close fast when getting focus lock or taking a picture, the problem happens only when you release the focus.

It's like when you zoom during a video with 10-24 or similar lenses, you can notice that little black, dark corner on the frame blinking.

Hello, here I am again with a sample video clip to explain better the problem, it's still there.

I've now Fujifilm X-H1 fw 2.12 and 18-55 with fw 3.23 (made in Philippines).
As you can see when you stop down the aperture and you press-and-release the shutter button the annoying flicker occurs: to engage focus it's instant the iris opening but when you leave the shutter it's slow, fluctuates and move in little steps causing this annoying flickering. Expecially under the sunlight is very annoying to shoot with (more intense flickering and IRIS movements), it's like it isn't going directly into the right physical iris aperture. I tried in M mode and A mode, same result with and without anti-flicker ON. Disabled lens correction and tried different shooting mode, but when the lens is stopped down the problem is there after leaving the shutter button, less visible or non-existant in AFC (because the IRIS of course is constantly fixed at the designed value).

VIDEO 1
https://www.youtube.com/watch?v=LUI2oXk3p6Y
> as you can see it's not related to EVF or LCD, it's related to the IRIS movements. You can clearly see the exposure getting acquire after 3-4 steps in the histogram.

VIDEO 2 (sample clip to let you hear the IRIS sound, just take it as a basic audio sample to ckeck if similar to your lens copy, flickering behave differently in video mode)
https://www.youtube.com/watch?v=TU28LEn_T3g

Please let me know if your copy of 18-55 behave exactly the same, if affermative it's a lens design... sadly, very annoying to shoot in AF-S with it.

Thank You

Does your copy do the same guys?

Please let me know if you can do a quick test with 18-55, just to know if bad copy or it's the general lens behavior.

Thank you

Mike1988 wrote:

Does your copy do the same guys?

Please let me know if you can do a quick test with 18-55, just to know if bad copy or it's the general lens behavior.

Thank you

Please guys, can you do similar test and tell me if you see the same results into evf/lcd with your lens copy? (flickering and general behaviour) It's the most popular Fujifilm lens.. nobody can do a very quick test? ..30 sec at a least.

> check the previous post for the video/problem example

I'll add one more clip to show better the problem, which seems also there with other lenses not only the 18-55. The IRIS is not smooth even if driven by wire, but expecially in Aperture priority as showned here, with different type of light and exposure is very visible the "flickering" (expecially on a brigth day). It's annoying for me, but not so many people talk about it. Afaik accordingly to Fuji it's a "normal" behavior.
In the first part you can see the iris adjusting even if I set the aperture value, and in the second part you can see more the flickering while focusing and releasing the shutter button.
https://youtu.be/hTfw4VLaObQ

Mike1988 wrote:

I'll add one more clip to show better the problem, which seems also there with other lenses not only the 18-55. The IRIS is not smooth even if driven by wire, but expecially in Aperture priority as showned here, with different type of light and exposure is very visible the "flickering" (expecially on a brigth day). It's annoying for me, but not so many people talk about it. Afaik accordingly to Fuji it's a "normal" behavior.
In the first part you can see the iris adjusting even if I set the aperture value, and in the second part you can see more the flickering while focusing and releasing the shutter button.
https://youtu.be/hTfw4VLaObQ

Hi, Mike
Not sure if anyone already told you, but
What I see is the specificity of the H1 body firmware
What are the lenses doing is the aperture adjustment in the low light conditions. And yep, it is not bug but a feature claimed by Fuji. Just try it on another body if you can

aliksays wrote:

Mike1988 wrote:

I'll add one more clip to show better the problem, which seems also there with other lenses not only the 18-55. The IRIS is not smooth even if driven by wire, but expecially in Aperture priority as showned here, with different type of light and exposure is very visible the "flickering" (expecially on a brigth day). It's annoying for me, but not so many people talk about it. Afaik accordingly to Fuji it's a "normal" behavior.
In the first part you can see the iris adjusting even if I set the aperture value, and in the second part you can see more the flickering while focusing and releasing the shutter button.
https://youtu.be/hTfw4VLaObQ

Hi, Mike
Not sure if anyone already told you, but
What I see is the specificity of the H1 body firmware
What are the lenses doing is the aperture adjustment in the low light conditions. And yep, it is not bug but a feature claimed by Fuji. Just try it on another body if you can

I'll open another thead with new sample to show better where and when the problem occurs, also with other lens is visible the flicker, but doesn't occurs in MF mode with same settings even by using AF ON to focus, or half shutter to lock the exposure. Very strange and related to AF-S mode.

I have the same issue with an XT20 and the 18-55 mm kit lens.