Archived posting to the Leica Users Group, 2002/09/15

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Subject: RE: [Leica] scanning B and W - Scan Grayscale or RGB
From: "Austin Franklin" <darkroom@ix.netcom.com>
Date: Sun, 15 Sep 2002 19:23:05 -0400

Hi B.D.,

That's one of the two choices I believe I listed..."If you scan in RGB..."
;-)

Austin

> Hey, Austin - What about telling the scanner that it is scanning a generic
> color negative, and then doing the adjustments in Photoshop?
>
>
- -------------------------------------------
>
> Hi Ernie,
>
> Most every scanner (but one that I know of, the Leafscan), scans
> B&W in RGB
> anyway.  What happens when you select B&W, is the scanner scans in RGB and
> uses it's "canned" proportions/mix of RGB to give you your grayscale scan.
> That makes this process VERY scanner dependant...some may do it
> better than
> others.  I wish that scanner driver writers would make it so YOU could
> choose the mix in the driver, but I don't believe any do...like you can do
> in PhotoShop...  If you scan in RGB, you then have full control
> over the mix
> in PhotoShop.
>
> My suggestion is to simply try both methods, and see what works best for
> you.  You may find the B&W you get from your scanner to be fine
> for you, and
> you may find the RGB conversion takes time, is difficult to get
> the results
> you want or whatever...so there can be many factors that make you
> "like" one
> over the other.  And, you may later change your mind ;-)
>
> IMO, the best B&W scans I've seen are from the Leafscan, as it
> does not scan
> B&W in RGB, but using a single neutral density filter...and IMO,
> this gives
> better tonality than using RGB to scan B&W film.
>
> Regards,
>
> Austin
>
>
> > -----Original Message-----
> > From: owner-leica-users@mejac.palo-alto.ca.us
> > [mailto:owner-leica-users@mejac.palo-alto.ca.us]On Behalf Of Ernest
> > Nitka
> > Sent: Sunday, September 15, 2002 3:39 PM
> > To: leica-users@mejac.palo-alto.ca.us
> > Subject: [Leica] scanning B and W - Scan Grayscale or RGB
> >
> >
> > when scanning Black and White is it preferred to scan grayscale or RGB
> > - what are the pros and cons of either way. I realize file size will be
> > different but is there in general an advantage one way or the other?
> > I'm using a Nikon scanner
> >
> > TIA
> >
> > ernie

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