Canon R5 help...weird swirls in images

Pmm85 wrote:

Hi,

I have a Canon R5, and during editing, especially when anything over a +8 bump in shadows or small bump up in exposure is done this weird circles pattern engulfs the image making it unusable. I've exaggerated the edit it in the attached image so you can see the pattern, but this doesn't happen on my 5D IV or 5D III when doing the same thing with the same settings. It's pretty much rendered the R5 useless because it shows up doing very minimal editing using Lightroom or ACR. It shows up at most ISOs, and the images across all ranges seem noisy (no matter of how much light I get on the sensor. Is it a noisy camera compared to the 5D IV, even just raising shadows a little seems to bring up noise the 5D IV doesn't have issues with pulling up in the same settings/setup. I can't reproduce the patterns/swirls doing the same on my 5D bodies.

Can anyone help? Is my R5 faulty?

Any help would be great, I'm totally stuck.

Thanks.

Paul

I SENT THE FOLLOWING MESSAGE (minus photo #3 — it was too large) to Adobe Customer Care, after two phone conversations with them on March 2 & 3, 2023.

Jan

I sent this with FOUR images (including the original Canon RAW .CR3 image) to the Adobe prerelease forum:

Adobe Lightroom Classic Forum for the "Lightroom Prerelease Program (for the "entire Lightroom family, including Lightroom Classic and Lightroom CC):

https://www.adobeprerelease.com/beta/58066397-8A54-4025-8C68-8672C4F87759/feedback/home#

Problem Description:

There is a serious, ongoing problem with Lightroom Classic when editing high ISO Canon RAW (.CR3) images in the Lightroom Classic DEVELOP MODULE (many versions, for over a year). When the EXPOSURE of those images is INCREASED SIGNIFICANTLY in Lightroom Classic’s DEVELOP MODULE, doing that introduces a strong MOIRE EFFECT that can be seen over the entire image. This MOIRE EFFECT can be most easily seen in the otherwise very dark areas of images.

IMPORTANT: This MOIRE EFFECT can only be seen while editing images in the Lightroom Classic Develop Module. When that image is exported, the MOIRE EFFECT disappears. This suggests what is being seen only affects the PREVIEW copy of the image, which is what is seen while editing images in the Lightroom Classic Develop Module. The actual edited image, when exported, does NOT have this MOIRE EFFECT.

It is not possible to correctly edit images when this MOIRE EFFECT covers them. When editing images, it is necessary to see how they are actually going to look when the images are exported. The moire effect makes it impossible to see if there are problems with the image that need to be corrected in editing, before they are exported. The moire effect hides problems like grain, poor focus, etec.

The MOIRE EFFECT is not there if the same images are opened in Canon’s proprietary DPP4 (Digital Photo Professional 4) editing software. I phoned Canon Professional Services. They are aware of this issue with Canon’s RAW .CR3 images when opened in Adobe Lightroom. They told me that there is nothing they can do about it. They suggested that I contact Adobe.

This problem has been noted and discussed in the popular DP Review forum for over the past year. See https://www.dpreview.com/forums/post/66907834

Please do something about this.

Steps to Reproduce:

1. Open any high ISO Canon RAW image (.CR3) with dark areas.
2. In the DEVELOP MODULE of Lightroom Classic, increase the exposure.
3. The greater the exposure increase, the stronger the MOIRE EFFECT (and the noise, of course) will be.

Actual Result:

A strong MOIRE EFFECT, along with increased noise. when viewed in the Lightroom Classic Develop Module, but NO MOIRE EFFECT when that exact same image is exported. The MOIRE EFFECT is only visible while editing in the Develop Module.

Expected Result:

Just increased noise.

Any Workarounds:

Open the images in Canon's proprietary DPP4 editing software, where there is no MOIRE EFFECT, or clean it up as best as possible, when editing in Lightroom Classic, by further editing in the Topaz DeNoise AI plug-in — but doing so significantly worsens the sharpness of the images..

System Info:iMac Pro, MacOS Ventura 13.2.1 plus previous versions of the OS (this has been a problem for over a year)I a

I attached FOUR images from the Lightroom Classic Develop module in my submission to the Adobe Prerelease Forum. Here I am only attaching TWO images — one BEFORE I increased the exposure and one AFTER increasing the exposure, but before exporting it — at which time the moire effect disappeared. The full size Canon RAW .CR3 image and the exported image that just shows noise, but no moire effect, are too large to be sent in an email:

IMAGE #1:

As seen in Lightroom Classic BEFORE increasing the exposure:

IMAGE #2:

As seen in Lightroom Classic AFTER increasing the exposure. Note the strong Moire Effect that is only seen within the Lightroom Classic Develop Module. This moire effect disappears when the image is exported. This moire effect is not present when the .CR3 image is opened in Canon’s proprietary DPP4 image editing software:

IMAGE #3:

As seen AFTER exporting the image. Note that the MOIRE EFFECT IS GONE. The image is just very grainy, which is to be expected. This moire effect is NOT present when the .CR3 image is opened in Canon’s proprietary DPP4 image editing software:

Jan