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[filmscanners] RE: 16 vs 8bit scans



> From: Ed Verkaik
>
> I'm new to scanning, using a Nikon 4000ED on PC.  I've been scanning in
> 14bit mode, doing some cleanup and adjustments, and resaving as 16bit
> TIFF masters.  What I wonder is... how many of you do your adjustments
> in 16 vs 8bit, and does it matter for final quality either way? Also,
> would a native 8bit scan using NikonScan be as good as if  it had been
> converted to 8bit in PS7?

Experience shows that eight bits is fine, unless you need to do some really
major bending of the curves. I generally save 16bpc masters, but only
because I routinely underexpose my digicam shots (to avoid clipping
highlights), and I do a lot of low-light photography (film and digital) that
leaves a lot of detail hidden in the shadows.

For masters, I prefer JPEG2000 over TIFF, for the obvious size reasons. But
once I've done an edit, I save as 8bpc lightly-compressed JPEG (PS quality
setting 12).

--

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


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