Actually, I understand that film is capable of recording about
10,000 dots per inch. Of course if you scan it at that
resolution you would be scanning individual grains of silver. I
imagine much image data would be lost in moire patterns. 4000
dpi does sound like about the highest res that would give a
useful scan.
--Tom


John Francis wrote:
> 
> A 4000 dpi scan of a 35mm frame, at only 24 bits/pixel, is 60MB.
> So is a 2700 dpi scan at greater pixel depths (from scanners that
> can deliver 10, 12, or 14 bits per component).
> 
> A good lens can easily deliver 4000dpi of resolvable data on modern
> 100-speed films (although that's getting pretty close to the usable
> limit, especially for hand-held shots).
> 
> Claiming a cheap disposable camera can do that well is hyperbole.

-- 
Tom "Graywolf" Rittenhouse
Graywolf Photo, Charlotte, NC, USA
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