Color Moiré?

[mrcmrc]

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I noticed the appearance of moiré in picture 1 (blinds), I think this could happen because of the horizontal lines, but I didn't think it could happen in other situations as in the second photograph (the plaque with engraved words) ... this with an M10- P and Elmar 24.

Has anyone had any such experiences?

 

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[01af]

vor 34 Minuten schrieb mrcmrc:

Has anyone had any such experiences?

Yes. It's the inevitable consequence of the missing anti-aliasing filter.

[jaapv]

Completely normal. Read this and the following post in the M FAQ:

 

[adan]

8 hours ago, mrcmrc said:

I didn't think it could happen in other situations as in the second photograph (the plaque with engraved words)

Since the Bayer pixel array is a two-dimensional grid or checker/chessboard, there is no geometric difference between horizontal lines (blinds) and vertical lines (the strokes in the engraved lettering).

Any part of the image that is sharp enough, and with lines or patterns within a few degrees of being aligned vertically or horizontally with the pixel grid, can produce aliasing (a single thin line barberpoling red/cyan/red/cyan...—————————————) or moiré (the exact same effect, over a larger area of pattern or texture).

Even individual sharp points (e.g. bright specks of sunlight reflecting off running water, or specks of mica in stone) can alias into colored specks - although it is frequently mistaken for purple fringing (which may be occurring at the same time). If the specks of light are so sharp and small as to fall on only one or two red/green/blue pixels, they can turn into "colored confetti."