Circular Banding with Vignette Lens Correction

@GoldingD: "it appears that the correction is not creating the artifact but causing it to be more obvious."

That's what the raw files indicate. When you exaggerate the banding with Exposure = 3.2, Clarity = 100, Dehave = 100, you can clearly see it with and without Lens Corrections enabled.  See this screen recording:

https://www.dropbox.com/s/i31xrdyu8i3y15t/lens-profile-banding.2024.06.27.mp4?dl=0

So the hypotheses are:

- The UV filter and/or lens hood are causing this. You could try some near identical shots with and without them to test that,

- An imperfect lens profile is causing this by exaggerating the effect rather than minimizing it.

Here is the link of the raw files. All photos were taken on the same day with the same lens. I added folders of some where you can and cannot see the banding as well. 

https://drive.google.com/drive/folders/1trfNq3xVJaSO--ykcHCoSAi_WNy9c5mS?usp=sharing

The photos attached are the original and with contrast boosted to show the banding more clearly.

I have only noticed this issue recently, and it seems in some photos it is very faint and in others it is pretty noticeable. I have found it also only appears when the vignette control is turned on. 

If it helps, I have a Sigma 150-600mm + UV Filter and Lens Hood. The banding is only visible with this lens and profile corrections, and not my 24-120mm with profile corrections.

Please upload a couple of the original raw photos showing the problem. If the forum won't let you attach them, then upload them to Dropbox, Google Drive, or similar and post the sharing link here.

So a very faint (and in all pics presented) circular artifact such as might be a CPL filter issue, or a Lens Hood issue, or a lack of Lens Hood (glare/flare) issue?

If your pairs of screenshots are to indicate with and without the lens profile corrections are on or off, it appears that the correction is not creating the artifact but causing it to be more obvious.