Digital BW, The Print

> From: Truman Prevatt [mailto:tprevatt@...]
>
> One reason to have more bits in the A/D is to give yourself a margin for
> error in an image for under or over exposure or in RF systems for bad
> gain settings. So there are two issues, the S/N required and the dynamic
> range that insures that S/N is still captured even in the case of a
> screw up.

That's a good reason to want more S/N in the system, not just more bits in
the A/D. There's never any reason to have more bits in the A/D than the S/N
justifies, because any extra bits will be garbage.

--

Ciao,               Paul D. DeRocco
Paul                mailto:pderocco@...