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Old 10-07-2018, 09:30 PM
fsr
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fsr is offline
 
Join Date: Nov 2015
Location: Hurlingham, Buenos Aires
Posts: 23
Why not just LRG?

Hi,


I was wondering, if luminance can be calculated from RGB, then why capture LRGB? I understand that it's desirable to capture the luminance, because of the high transmission of this filter, but why not just capture LRG, and calculate B from that?


It seems to me like if L = 0.33 R + 0.33 G + 0.33 B (or whatever appropiate coefficients)


Then B = (L - 0.33 R - 0.33 G) / 0.33



Any reason why it's not done like that?


Regards
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