[Tig] Instinctive contrast

[Joe Owens]

Quote:   Green is considered "normal" which is why the
original Rank Encoders derived luminance from the Green channel.

I always thought it had more to do with the old Y derivation for  
composite Y,I,Q which was (roughly) 70/20/10 G,R,B or something like  
that.
Which took advantage of flesh tone being roughly on the I/-I vector  
and reducing bandwidth on the Q/-Q vector (magenta/green) while  
building resolution back up in that area because Y is mostly green.

Joe Owens
Presto!Digital Colourgrade
302-9664 106 Avenue
Edmonton, Alberta T5H0N4
+1 780 421-9980
jpo at prestodigital.ca