Is this moire?

[hellobrandonscott]

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The coloration on groom's shoulder. Top photo is the 35 SL on an SL2-S and the bottom is the 90 SL on an SL2-S. It's super annoying. Any way to prevent it?

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Edited January 24, 2023 by hellobrandonscott

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[insomnia]

Well you could shake the camera a bit!

Seriously, there's easy fix in Lightroom and probably other RAW converters. Take a brush, move "Remove Moire" Slider to the right and at least the coloration will be gone.

[helged]

https://photographylife.com/what-is-moire

[Ken Abrahams]

Its quite pronounced on his suit, I have never seen that with 7 years shooting SL. Its the nature of the suit material which makes this artefact so severe.

Retouching in photoshop will give effective results, the cloning stamp tool or healing brush. Masking good areas of suit in  would work too, only you would know there was some aberration afterwards.    

[Sjz]

I have only seen it once, a building in London, it was reduced (not fully removed) by a slider in C1. 

[Stuart Richardson]

All the above techniques can help. Two more you can try: 1. Use the "enhance" selection in Lightroom (probably camera raw too...not sure), and that will do a more process intensive raw conversion. Basically, moire happens when the fine detail is in a repeating pattern and it confuses the bayer algorithm, which relies on looking at neighboring pixels to determine color. You enter a kind of feedback loop, which creates a rainbow pattern. Lightrooms enhanced raw conversion can sometimes minimize these artifacts, as it does a more process intensive, but more accurate raw conversion. There is of course the moire tool, which will cut down on the rainbows, but also tends to desaturate the area, and the structural part of the moire will still be there, if not the color of it. If you find this problem in realtime, you can try stopping down a few stops...go past the diffraction limit, for example at f8-16. That softening might be enough to get rid of it. It is a pain, but it is usually not something that happens too often. Higher resolution cameras have less of a problem with it, typically, as the repeating detail has to be ever finer, and often the lenses are not sharp enough to cause it at the highest megapixel counts.

[Luke_Miller]

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Reportedly the higher resolution of the SL2 makes it less prone to moire.  So that may be the only way to prevent it.  In my experience I have always be able to correct it in post.

[hellobrandonscott]

Thanks for the feedback folks! You're all right, it doesn't happen often, which I'm thankful for. I'll just start prescribing outfits for couples from now on from a pre-tested list of approved clothing, haha. 

[Stuart Richardson]

Clothing really is the most common culprit it seems, as there are not as many things in nature that have such fine, repeating patterns. Occasionally you can see color aberrations in water or in grass, but it is not as common. I have had this issue at times with aluminum fencing or aluminum siding when buildings are far in the distance, and sometimes there are other architectural features that can do it, but woven clothing like suits, oxford shirts, lace or netting seems to be the most common culprits. Using the APO Summicron SL lenses is not really helping you in this case either, as they are so blazingly sharp. The trade off for that on a lower resolution sensor is moire in some scenarios.

[hellobrandonscott]

FWIW, it's also happening on the Q2 with the same outfit.

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Edited January 24, 2023 by hellobrandonscott

[SrMi]

Yes, that is moire. 24MP sensor typically have AA filters to prevent moire, SL2-S does not (better sharpness). Higher MP sensors have less moire, but it still can occur. Post-processing should be able to fix it.

[Photoworks]

22 hours ago, hellobrandonscott said:

 I'll just start prescribing outfits for couples from now on from a pre-tested list of approved clothing, haha. 

That is what they do in television LOL

[Reddy]

I got Panasonic S1H for that moire reason. 

[hepcat]

Yes, as others have said, "that's a moire."

Sorry...  I just couldn't help m'self...

Going to my room now. 😉

 

 

[SrMi]

On 1/25/2023 at 4:56 PM, Reddy said:

I got Panasonic S1H for that moire reason. 

Because moire is hard to fix in the video, S1H has an AA filter. However, I wish Leica would implement Pentax's solution: an optional AA filter simulated with slight vibration.
I have no issues with moire in my shooting and prefer the added sharpness instead.

[chrismuc]

The sailing boat poles are just a few pixel wide and nearly vertical. This color fringing is Moiré, as others mentioned. It’s a good sign 😋, because it means the lens is very sharp, even on the 47 MP sensor w/o AA filter. 
With the Signa 20f2 you probably won’t see such. The lens is not the best Sigma offer in that focal range. The Sigma 24f2 and the 20f1.4 are sharper.