[filmscanners] RE: Tweaking RAw files

["Alessandro Pardi" <alessandro.pardi@inferentiadnm.com>]

Hi Bob,

I always work with raw files I get from Vuescan: as Austin said, they're
plain tif files, and Vuescan apparently saves them with profile information,
so that when I open them in Photoshop I get the profile conversion dialog
with my scanner's profile selected.
I only scan B&W images, and raw files give me the best in flexibility (e.g.
I can pick the green channel only, which with my Canon FS4000 is by far the
sharpest and less noisy). If you work with color images, though, getting the
colors right may be a tough job: that's where a proper software helps most.

Alessandro Pardi

> -----Original Message-----
> From: Austin Franklin [mailto:austin@darkroom.com]
> Sent: giovedì 12 dicembre 2002 20:20
> To: alessandro.pardi@inferentiadnm.com
> Subject: [filmscanners] RE: Tweaking RAw files
> 
> 
> 
> > Can one tweak RAW scanner files in the same way that one 
> can improve RAW
> > digital camera files? With the same software?
> 
> Hi Bob,
> 
> Probably not.  The raw camera files contain the Bayer pattern CCD
> information (unless it's a multi-pass scanning digital camera of a
> Foveon)....where the data is %25 Red, %25 Blue and %50 Red...the color
> information hasn't been interpolated yet.  A scanner raw file 
> is simply a
> generic TIF or JPEG, uncompressed.
> 
> Regards,
> 
> Austin
> 
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