On 27 Oct 2004 at 19:18, J. C. O'Connell wrote:

> I said I thought visible distinguishable shades was less than 16 bit
> (64K shades).
> That means I think 16 bits is sufficient, it doesn't mean I think 8 bits
> is. Image editng is another issue altogether because of
> the precision of the iterated math affects the image quality to a very
> visable extent.

OK. 14 bits are required according to Charles Poynton:

http://www.poynton.com/notes/colour_and_gamma/GammaFAQ.html#smoothly_shade


Rob Studdert
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Pentax user since 1986, PDMLer since 1998

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