[filmscanners] Re: Acer Scanwit 2720S color depth

["Arthur Entlich" <artistic-1@shaw.ca>]

In a word, yes, you get some advantage.  For one thing, you get 4 bits
extra per color (RGB) which is a fairly major difference in the number
of colors produced.  There are 8 bit, 10 bit, 12, 14 bit scanners, and
beyond.  Photoshop uses the standard 8/24 and 16/48 bit.  Of course,
Photoshop can't create more bits of accuracy than the scanner provided,
but again during the manipulation process, the finer the steps, the less
errors are introduced during the multiple changes made while the image
is being processed within Photoshop.

Art

Titus Tucan wrote:

> My Scanwit 2720S is rated a 12 bit per channel device (12x3=36bit) right?
> The software that comes with Miraphoto has three options for color
> 1.    High speed (I don't know what that represents)
> 2.    24 bit color
> 3.    48 bit color
>
> Photoshop and Vuescan can have only 8 bit or 16 bit colors as well
>
> I'm confused, and don't understand why the software provides just 24 and 48
> bit if the scanner is 12 bit (36 bit total)
> Do I get any advantage scanning in 16 bit per channel) 48 bit, or I should
> simply use (8 bit per channel) 24 bit?
>
> Thanks,
>
> Titus
>


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