[pure-silver] Re: Ruminations On Subject Brightness Range In The Real World
- From: Tim Daneliuk <tundra@xxxxxxxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Tue, 11 Sep 2012 14:48:23 -0500
On 09/11/2012 02:40 PM, Tim Daneliuk wrote:
<SNIp>
One point of clarification: Properly speaking the number of bits
in a digital system has nothing to do with the range of light
you can capture. Rather, it defines *the number of discrete tones
you can render*. A 1-bit system would capture the entire range
of light because it would display either pure black or pure white,
but it would have not other intermediate tones. With 16-bits,
you end up with 65,536 such discrete tones.
Film, of course, is analog and has no notion of a "discrete" tone. It
would be interesting to know - if anyone does - how many shades from
pure black to pure white the human eye can distinguish. It would seem
THAT would define what an equivalent digital system has to do to
compete with film fidelity.
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Tim Daneliuk
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