RE: Dynamic range solved was Re: filmscanners: Sprintscan 120 now on B+H web site ...

[shAf]

Rob writes ...

>
> Ed wrote:
> >log10(2^13) = 3.913
> >log10(2^14) = 4.214
>
> Thanks, Ed!  I remember Tony saying many times that there
> was no standard way of calculating DR from scanners,
> but it looks like the manufacturers have simply
> used the mathematics based on the bits from the A/D.
> ...

        Keep in mind ... just because the bit depth allows for greater
optical density, it doesn't mean that noise or some other CCD problem
is the weak link in the practical application of the scanner's optical
density.

shAf  :o)