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     áòèé÷ :: Filmscanners
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[filmscanners] RE: Digital Darkroom Computer Builders?



Hi Paul,

> ...However, even in 8-bit mode, having a
> 10-bit DAC is useful because it keeps the color lookup table curves from
> introducing posterization through round-off errors.

If it's 8 bit data, you are feeding the DAC only 8 bits, if you are using a
10 bit DAC, then the lower two bits are merely set to 0.  The rounding
"error" occurs in the conversion from N bits to 8 bits, which, I believe, is
unavoidable, no matter how many bits your DAC has.

Austin

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