Moire on the sky, wall etc.

[vojtechmervart]

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Hello, I own a Leica Q camera and lately I've been struggling with moiré patterns appearing on the sky, walls or background. I'm aware that the Leica Q doesn't have a low-pass filter, but I find it odd that this problem occurs especially with skies or backgrounds - I thought it might happen with a fabric like a sweater, for example.
I am adding a screenshot of a zoomed-in photo where moiré is visible - The issue gradually becomes apparent as I zoom in on the photo. I can't see the moiré when the photo is zoomed out.
Thank you very much for all the explanations, advice, tips, and tricks.

 

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[prk60091]

happens alot when you expose using the electronic shutter (in excess of 1/2000 second)

[LocalHero1953]

I don’t think this is moiré, which is an interference pattern, which just shouldn’t happen in smoke, but I can’t explain it otherwise. What were the exposure settings (including ISO) and have you done much post processing? Is this a jpg from the camera or an edited dng? How many pixels across is this zoomed in image?

Edited February 8, 2024 by LocalHero1953

[david strachan]

I get moire when I photograph distance through a fly-wire screen.  Is this a possibility?

...

[jaapv]

I would call that pseudo

1 hour ago, LocalHero1953 said:

I don’t think this is moiré, which is an interference pattern, which just shouldn’t happen in smoke, but I can’t explain it otherwise. What were the exposure settings (including ISO) and have you done much post processing? Is this a jpg from the camera or an edited dng? How many pixels across is this zoomed in image?

I think it is caused by over-processing underexposed JPGs. 

[bobtodrick]

Doesn't look like any moire pattern I've ever seen.

[Miltz]

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This looks like a file that was pushed in post, not moire. Pushing it introduce these types of visuals unfortunately. 

[M11 for me]

@vojtechmervart I wonder (1) how this image looks just out of cam. (2) Did you shoot in JPG?

[vojtechmervart]

4 minutes ago, M11 for me said:

@vojtechmervart I wonder (1) how this image looks just out of cam. (2) Did you shoot in JPG?

Nope, I shoot only in raw. Basic corrections (+contast, -lights and whites, +5 clarity and textures, sharpening on 60 and  +dehaze).

[vojtechmervart]

9 hours ago, LocalHero1953 said:

I don’t think this is moiré, which is an interference pattern, which just shouldn’t happen in smoke, but I can’t explain it otherwise. What were the exposure settings (including ISO) and have you done much post processing? Is this a jpg from the camera or an edited dng? How many pixels across is this zoomed in image?

iso100, f/4, 1/1000s - edited dng - basic adjustments.
I think its 150% crop

Edited February 9, 2024 by vojtechmervart

[M11 for me]

vor 2 Minuten schrieb vojtechmervart:

Nope, I shoot only in raw. Basic corrections (+contast, -lights and whites, +5 clarity and textures, sharpening on 60 and  +dehaze).

That is what I would normally do, too. Can you still show out if cam? 

[LocalHero1953]

.

Edited February 9, 2024 by LocalHero1953

[vojtechmervart]

3 minutes ago, M11 for me said:

That is what I would normally do, too. Can you still show out if cam? 

I don't see anything like that in the original, which might be because the original is in color. i dont know.

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[M11 for me]

May I ask some other questions:

1) What programme do you use for processing?

2) How did you export your first image? Did you take a screen shot or is it an export and with what settings? Where dies the black line on the bottom come from?

Edited February 9, 2024 by M11 for me