RAW Vs. SRAW..

Started Dec 27, 2007 | Discussions thread
GaborSch Veteran Member • Posts: 7,203
Black level correction in sRaw

John Sheehy wrote:

That doesn't make any sense (not that it would stop it from being
true!). There is no way to reduce the number of samples by 50% for
each color without all kinds of spatial redistribution problems

I think (though I am not sure), that following happens:

R-G-R-G
G-B-G-B

this octet will be substituted by G&R-G&B.

Does sRAW maintain the blackpoint offset?

1. There is no "blackpoint offset" in Canon cameras, but arrays of black level corrections (masked areas at two, three or four edges of the image).

2. Because the black level correction depends on the position of the pixel (column-row crossing), there is no way to apply the corrections gained from the masked pixels. That has to happen in-camera, before creating these "composite" pixels.

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GDi
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