What's this??!! ( circular ring artifacts )

Started Feb 26, 2014 | Discussions thread
wictred Senior Member • Posts: 1,195
Re: What's this??!! ( circular ring artifacts )

mbietenholz wrote:

I'll try this later when I get a chance. I don't get it - turning the vignetting correction on in the camera does *not* cause the vignetting correction to be baked into the RAW data, but *does* cause some other subtle change in the RAW data that produces banding at very low light levels?


But it is only a very very small effect ...

However when it is the lower bits of the RAW it will become visible when you push the exposure afterwards.

The shadows don't contain that much detail, and if you "amplify" the result in PP, small differences become visible. Just like shadow noise becomes visible the same way.

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