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RE: Black and white negative scanning
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RE: Black and white negative scanning


  • Subject: RE: Black and white negative scanning
  • From: Ludovico Fischer <email@hidden>
  • Date: Wed, 14 Nov 2007 00:36:02 +0100

Yes, using color could be an idea. About the AdobeRGB profiles,
something happened to that batch. Some images seem untagged, while in
others are tagged with 'Epson-Grey Gamma 2.2' (read using exiftool). I
think it's not a good idea to apply a RGB profile to greyscale, or
whatever happened when those pictures were produced.

Ludovico Fischer
On Tue, 2007-11-13 at 16:43 -0600, Rich Apollo wrote:
> > After I got Michael Eddington's neat answer, I became curious about
> > these greyscale profiles. Apparently you can make a greyscale
profile
> > out of a CMYK one by extracting the black information. But what
> > happens
> > if one works with a greyscale image the same way as with a colour
one?
> > Is there a problem in using the RGB profiles which are common for
> > color
> > photo work (sRGB, Adobe, ProPhoto)?  I ask this because I received
> > grayscale Tiffs tagged with the AdobeRGB1998 profile.
>
> I don't think you can tag a Grayscale image with an RGB profile.
> Photoshop, at least, won't allow it. Were these desaturated RGB files?
>
> > Lastly, is there
> > some kind of widely used greyscale profile to convert to? I got two
> > profiles called GREY-EW18 and GREY-EW22. 18 and 22 look like the
gamma
> > (1.8 and 2.2), but do these two profile correspond to some kind of
> > standard (EW?)
> >
> > Thank you,
> >
> > Ludovico Fischer
>
> After playing with grayscale profiles for a bit, I decided I really
> prefer the results from the Channel Mixer.
>
> rich
>
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