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Thorsten Froehlich wrote:
>
> ...
> A computer screen can only display 8 bits per colour component, which also
> limits it to 256 (8 bit) levels of grey. You will not be able to see the
> difference on screen if you use 65536 (16 bit) levels of grey.
>
> 16 bit per colour component or 16 bit greyscale for output are only useful
> if you plan to post process the image in a program like PhotoShop, i.e. in
> order to print it.
Hmmm... Hmmmm... Hmmmmm....
Are you really sure about this ?
I thought that most of today's monitors can show as
many different levels of grey (monochrome) as the
graphics adapter (video card) can produce.
This is because they are analogue.
(There are of coarse limitations. Because the
bandwidth of the monitor's electronic, phosphor and
optical parts is limited. Another limiting factor
is presence of noise; both electrical and "optical".)
And yes; if the D/A-converter(s) on the video card
are only 8 bit (RGB: 3*8bit = 24bit), then max 256
different monochrome levels can be produced by it.
But if one for instance has a video card with 3
D/A-converters, each with 12-bits, then it could
produce 4096 levels of grey.
Tor Olav
--
mailto:tor### [at] hotmail com
http://www.crosswinds.net/~tok/tokrays.html
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