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andydub1
Participating Frequently
June 16, 2022

P: Strange moiré patterns with high ISO images with Lens Correction

  • June 16, 2022
  • 24 replies
  • 8105 views

I was editing some events photos and started noticed a strange pattern with low light files, and with the Lens Correction feature activated. I increase the exp so you can see better the lines. ISO 6400. Check the file

24 replies

Participant
October 12, 2023

I have been facing this issue for so long now on my R5. I wish Adobe would sort it out. I only ever notice it in B+W and turning off the lens correction sorts it but it shouldn't be an issue!

Participating Frequently
September 4, 2023

LR handles CR3 poorly compared to CR2. AI Denoise is beneficial for CR3 files on almost any ISO level

Macro Palermo - MRC Foto
Known Participant
August 29, 2023

It's with great regret that months go by, and the Adobe team hasn't even addressed this issue, or I haven't received any responses regarding it. I believe it's frustrating to have to manually check photo by photo due to a problem with lens profiles for Canon by Adobe. We pay for the program, and right now, we're experiencing a disservice. It's truly frustrating that after months, a solution still hasn't been found.

Macro Palermo - MRC Foto
Known Participant
August 29, 2023

m sorry, but what I mean is that I need to use Adobe Camera Raw and not other programs. My workflow goes through here, and I can't convert my files to DNG to address a problem that is not within my control.

deejjjaaaa
Inspiring
July 25, 2023

PS: and you do not need to live with linear DNGs... exiftool will allow you to copy optics correction data extracted by Iridient C-Transformer to a non-linear DNG created for example by Adobe's own DNG converter... after that the donor linear DNG can be deleted... a simple script to automate

deejjjaaaa
Inspiring
July 25, 2023

The main issue is precisely the fact that not seeing this defect on the photos during the development 

not true - the problem with how Adobe creates and applies its own lens profiles  is clearly seen in ACR during exactly the development if you bother to apply certain parameters to make it visible 

 

deejjjaaaa
Inspiring
July 25, 2023

dear... buy Iridient C-Transformer that will allow you to use optics correction data ( geometry, LaCA and vignetting ) embedded by Canon in CR3 raw files instead of crappy lens profiles supplied by ... and be happy ( naturally do not forget to switch off Adobe's lens profiles or simply delete them from your hard drive ) - will it go away 100% ? no, noise banding due to any optics correction - that is the problem first started when Panasonic introduced that in their m43 dSLM cameras - will not be eliminated in principle - but it will be less pronounced

Macro Palermo - MRC Foto
Known Participant
July 24, 2023

Unfortunately, I have noticed that the issue is widespread. I find it quite unbelievable that over a year since the first reports, nothing has been done to resolve it. Resetting preferences is not a solution. The problem lies in the algorithm that handles the lens corrections applied to various lenses. I can confirm that this issue is present at least on Canon R5 and R6, cameras that I have been using for event photography in the last two years. There doesn't seem to be this problem on Canon 5D Mark IV.

Rikk Flohr_Photography
Community Manager
Community Manager
July 10, 2023

I was able to reproduce this on some RF 11-24 F4 L Images shot at ISO 12800. I've logged it with the Camera Raw team to investigate further. 

 

Do you see the pattern after AI Denoise?

Rikk Flohr: Adobe Photography Org
andydub1
andydub1Author
Participating Frequently
July 26, 2022

Still having the problem

Inspiring
August 27, 2022

This is a HUGE problem with the R5 and I'm finding it's random. I used OCF and just did sports photos. Moire is on dark uniforms (black), light uniforms (white), and on cheer uniforms...wedding suits are fun too (said no one ever)! The "fix" I was been given by Canon is to go to Lightroom/Develop Module/K (brush). Zero everything out except Moire - I put the brush to 100 and then paint out the affected area. I find better results in Photoshop Ctrl+Shift+A (Camera Raw Filter) and do the same thing - K for brush, 100 for Moire and then do yourself a favor and uncheck the "reset sliders automatically". Shortcuts will be your best friend - good luck!

Participant
June 16, 2023

I've had a long long long discussin with Adobe about this, and they refuse to accept it's their algortihm, while Canon experts have taken a look at the pictures and concluded it's not in-camera. It comes out when you apply the Lens Profile Corrections, regardless if it's LR or ACR. Adobe's final "pro tip" was resetting the camera settings.. Disappointing as Eff by Adobe. No competence in our discussions and no affirmation their algorithms might be the problem. It's on all photos if you apply the lens profile corrections, but it shows up best in high ISO and noise in dark, underexposed areas.