I’ve been getting familiar with my new camera and ran into something that looks like a combination of discolouring and a moiré pattern in one of my images. After some digging and trying I do believe that this is a false colour demosaicing issue, one close to what is described on RawPedia
Here’s a 100% zoomed in view:
Switching to AMaZE or AMaZE+Bilinear partially resolves this, even with the false colour suppression steps set to 5 there’s still a remnant of the green visible:
Question: Is this indeed a False Colour Demosaicing issue or am I overlooking something else? Also: can this be refined even more?
RawPedia mentions that, in general, this is seen more with a lack of an anti-aliasing filter. This camera does have one of those…
There’s just one image that shows this in a set of 6, which where shot in a short (25 sec.) time frame. Same bird, distance. Slightly different settings and poses. The others are fine.
The RAW with this issue: Z62_0679.nef (28.4 MB)
PS: I also checked to see if this is an issue in darktable and it is. An obvious moiré pattern is visible. So there’s definitely something in this shot that demosaicing algorithms do not like…
EDIT: Area marked as asked by @afre