by Ganesh H Shankar on Fri Mar 27, 2009 8:49 pm
Hi Madhavjois, in my view this is where we get into some art vs science discussion. During the color conversion 16million colors need to get mapped to just 256 different shades of grey. The art part is in how we want to map these millions of colors into just 256 shades of grey. Obviously there are different mappings possible and of course different ways of controlling the conversion depending upon the effect we want to achieve. Correctness of such mappings (if one exists) belongs to more of science than art. Even in traditional B&W photography using B&W film people rely on different color filters to alter such maps (yes, different colored filters are used in black and white photography) - so controlling such color conversion map existed even before Photoshop was written.
Added on 29th - Madhav, just want to add, simple conversion to grey scale (one of the maps) does not yield this result !
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Ganesh H. Shankar
Wishing you best light,
Fine Art Nature Photography
» Last edited by
Ganesh H Shankar on Sat Mar 28, 2009 7:15 am; edited 2 times in total