Re: Here's what the M8 firmware does for red vignetting
Simon, the key point is that 2 * R/(B+G).
It's plotting red relative to blue/green and therefore "filters" out the vignetting due to the lens alone and the overall correction applied due to sensor vignetting. This additional fall-off is due to IR filtering alone.
IMHO, it's a good piece of work.
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Mark
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