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white dots appearing on dark area?

Dry Etch

By Dry Etch
in Fuji X-T3 / Fuji X-T30

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Dry Etch Newbie

Dry Etch

Posted
Posted

Hi All.

Take a look at the photo below.

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do you see distinctive white dots on dark area?
(magnified area is 40% brightened for more visibility.)
it was taken in 1/125s , F2 , ISO1600 , DR200% , PROVIA , WB Auto , and other settings at 0.


They really seem like dusts on sensor or lens... but they're not.
Everytime I take pictures, the white dots appear on different locations.


to make it sure, with lens cap closed, they still appear in random locations. And they get more as the ISO goes higher.


Of course I tried in-body pixel mapping. it didn't help at all.


And I also tested noise Reduction setting from -4 to +4. they always appear.
What was worse is that with NR +4, normal noise gets blury but the dots stay still. It's much visible.

 

At first, I thought my camera is defective.  (bought a brand new one and it's been only a month.)
But when I asked people who's using X-T3, some of them were aware of this.


I think this problem is maybe happening on All X-T3s.  (noise reduction algorithm fault?)
But just not widely known because it's not very easy to notice.


if you have X-T3, Please check this out.

Magnify your pictures and tell me if you have same problem.

 

 

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  • 4 weeks later...
nonoy Newbie

nonoy

Posted
Posted

yes! it does theyre plenty when you bump up the iso 400-1200 or the sharpness -1 to +4. but not noticeable at iso 2000/3200/6400 or in other color profile beside standard. FUJI what is this? please make this right with your next f irmware. I hope you are concern of your flagship consumer camera?    sample below

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Jimmy637 Newbie

Jimmy637

Posted
Posted

What program are you using for the photos displayed?

I can look back in my you tube history, I remember something that a you tuber identifyied that the logarithms in programs are not completely accurate for Fuji sensors and it is not the camera that is at fault, but is the program you are using for you Fuji files.

I am being vague about the terminology as I do not have the facts at this time, but just wanted to make you aware.

What do you think?

Jimmy

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  • 10 months later...
Liturram Newbie

Liturram

Posted
Posted (edited)

Hello all

I am having the same issue. I have noticed that only appears more frequently at 18mm. 
I have some dots that are persistent in many photos but weirdly not in every single one of them (8 of 10 I should say). 

If I move the zoom lens to a closer focal length (23-35mm) sometimes the white pixels moves a couples of pixels offset from the previous one at 18mm.

I did the test with the cap on and it seems that they are always present if you increase the exposure in post.

I also have some white pixel even a normal speed and ISO 160 when is poor lit scene.

Best 

Luis

 

Edited by Liturram
I added information
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