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Canon R5 help...weird swirls in images

Started Oct 3, 2021 | Discussions thread
John Sheehy Forum Pro • Posts: 26,688
Re: 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?

Looks like either lens distortion correction for the wrong lens, or for the right one, but your camera's readout channels are not even for the two green channels and the distortion correction math is coarse and makes the worst of the readout issue.

RAW files are always best for determining this.

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Beware of correct answers to wrong questions.
John
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