That number doesn't sound right to me because the human eye can see only about 15 stops range max at a time and if you spread out 24 bit resolution over 15 stops that would be approx 500 steps per fstop as being clearly discernable between each of the 500 steps. I know I cant see differences anywhere near that fine. Id like to read more on this, anyone have any good URLS on the subject?
JCO -----Original Message----- From: William Robb [mailto:[EMAIL PROTECTED] Sent: Wednesday, October 27, 2004 8:24 PM To: [EMAIL PROTECTED] Subject: Re: state of the art 35mm DSLR ----- Original Message ----- From: "J. C. O'Connell" Subject: RE: state of the art 35mm DSLR > 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. My Noritsu tech (I think the company does research into what the human eye can discern) says that we can see the equivalent of 24 bits per channel colour. I expect that this number will vary wildly, depending on ones age and a myriad of other factors. William Robb
