On 27 Oct 2004 at 18:48, J. C. O'Connell wrote: > Don't forget there are limits to how many shades of > gray the human eye can distinguish, how many shades > that is I don't know but I have a hunch it is less > than 2^16 shades (16 bit grayscale)which is 64K shades.
Well even if humans are incapable of distinguishing more than 255 luminance levels working in 16bits is still a real advantage whilst editing. If the gamma or overall luminance is shifted the fact that only 255 grey-scale steps are available becomes patently apparent. Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://members.ozemail.com.au/~distudio/publications/ Pentax user since 1986, PDMLer since 1998
