P3D Re: PHOTO-3D digest 3538

[pacaine <pacaine@xxxxxxxxxxxxxxxxxxxx>]

>
>
> Date: Fri, 8 Oct 1999 14:48:50 -0500
> From: David.Clark@xxxxxxxxxxxxx
> To: photo-3d@xxxxxxxxxxxxxxxxx
> Message-ID: <86256804.006CC7A1.00@xxxxxxxxxxxxxxxxxx>
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> The orange in negative film is a dye applied differently to each color layer of
> the film.  This adjusts for the differences in density between each layer.  The
> fact that different amounts of orange are applied to each of the three or four
> color layers makes it very difficult to remove in Photoshop.  Two films where
> the composite of all the layers show the same orange cast are probably entirely
> different.
>
>

I think difficult is too mild a term to describe my efforts at removing
the orange mask in photoshop.  I have a H.P.photosmart scanner which automatically
removes the mask when scanning 35mm negs.
However I have a few medium format shots which won't fit into the
35mm slot and have scanned these using the photoscanner.  The
problem then is to get rid of the mask.  What does the H.P.software
know that I don't.  Suggestions gratefully received.
Thanks Phil Caine