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Monochrome sensor conversion... seeking advise

Started Nov 7, 2016 | Discussions thread
ProfHankD
ProfHankD Veteran Member • Posts: 9,147
Re: Monochrome sensor conversion... seeking advise

chlamchowder wrote:

ProfHankD wrote:

bclaff wrote:

D Cox wrote:

The top layer is miscalled "blue". It is panchromatic with a blue bias. ...

Interesting, because where you said "some" above I would have thought "most".
So you're saying that something with a strong red component still registers significantly in the top plane?

Yup. This just came up a day ago in another forum....

Take a look at the source code for dcraw , the function foveon_interpolate().

Mind going through what it does? It's not a quick read at all, not very well commented, and has a lot of calls to other functions that themselves aren't commented.

Basically, the top layer sees all colors and wavelengths get filtered out at deeper penetration depths. Thus, obtaining individual colors involves subtracting -- and that accumulates color noise. However, the top layer by itself is a darn good monochrome channel.

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