P: Vertical bands in low light areas with Canon R7, using Camera RAW not with Canon DPP

Introduces or exposes banding? Use reasonable settings and its not an issue.

What this bug report is about that the lens profile of certain (but not all) lenses + sharpening introduces banding in lower exposed areas when used with the new Canon R7. when using Canon DPP for Post processing for reference it does not happen as far as I can tell.

Your settings are pretty wild, I wouldn't recommend them. Just consider this a new camera, new workflow needed.

I do understand that I have to work at 100% use noise reduction (I have been using PS for about 18 years now) As for the sharpening being way to much I have been using it for at least 10 years now as my standard sharpening, with no particular halos in my images on a number of cameras, Nikon and Canon. I have never seen this phenomeon before. I have seen it when over exposing in post with say 3-6 stops, wich is just a test for some people. But I digress.

What this bug report is about that the lens profile of certain (but not all) lenses + sharpening introduces banding in lower exposed areas when used with the new Canon R7. when using Canon DPP for Post processing for reference it does not happen as far as I can tell.

I downloaded the 880.cr3 file,  and what looks a bit like banding in the top right corner is caused by a combination of underexposure, oversharpening, too little masking, and lack of Luminance noise reduction.

I'm guessing that the lens profile accentuates the effect of your edits, because the corners have been stretched.

Underexposure will inevitably introduce noise in the shadows, particularly with high ISO images.

See Exposing a digital image 

You have set Amount to 70 for sharpening, which is way too high, and Masking is set to only 6, which is not nearly enough.

In addidtion, you have to use Luminance noise reduction.

Always work at 100% view when applying sharpening and noise reduction. Any other view will be inaccurate and misleading because the image has been scaled. (if you have a 4k or higher resolution monitor, you may need to work at 200% view, because the pixels are so small)

Below is a screenshot of your edits and mine, and my settings. I also set Exposure to 1.00 for both versions.

Based upon the information provided more information is needed:

1.  Exact version number of your Adobe Software
2.  List of lenses under which you observe this effect
3.  Sample raw file showing the effect
4.  Step-by-step editing instructions to make the pattern appear

This is actually a moiré pattern, you can see the concentric circles. This has been known to happen with certains lens profiles.

But first rule out a screen resampling artifact! Make sure you view at 100%.

If that's not it, you should report it as a bug (go up on the main page and click the "Bugs" tab).

Can you turn off the lens profile? I understand you can't with some mirrorless cameras with built-in lens profiles. I can with my Sonys, but I don't think it's possible with e.g. Nikon Z.