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[filmscanners] RE: Filmscanners - is this about as good asitgets?

> From: Julian Robinson
> Only one thing missing for me - my only doubt -- digitals record a scene
> brightness range that is meant to be suitable contrast for printing, in
> other words, a range of 4 to 6 or 7 stops.  This means they throw away all
> the info outside that range.  As we have discussed before, I often
> photograph scenes with greater range than this on negative film and
> reconstruct and manipulate to get sufficient contrast from that.
> So I will
> photograph a scene with 10 stops range, and later bring the shadows up or
> the sky back so the whole image then only has 5 stops range - i.e. the
> image has normal aesthetically pleasing contrast.

Digital's contrast range is the ratio of the clipping level to the noise
level. That's bigger than 7 stops. My DiMage 7 is more like 9, meaning that
the amount of noise I see on the 12-bit digital output is about three bits
or less. From what I've read, the 35mm CCDs are much quieter still.


Ciao,               Paul D. DeRocco
Paul                mailto:pderocco@ix.netcom.com

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