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[filmscanners] Re: RAW Format

Are you scanning with Vuescan? Then what is saved is a file that has the
uncorrected data from the scanner. If you scan at top resolution, then
this file will have all the infomation that the scanner can ever get out
of the photo, so you can refile the photo and not touch it again (until
you realize that there is too much dust on the scan, or you buy a new
scanner, etc.)

If you open the raw photo in a program like Photoshop it will not look
good. What you need to do is "scan from disk" in Vuescan and you will
recover the RGB photo with whatever post-processing desired.

If you are not scanning with VueScan, ignore this letter.


Alan Harper

At 6:18 PM 8/15/02, HMSDOC@aol.com said:

>I am scanning with a Polaroid SS4000+ and wondering about the42 bit RAW mode.
> How is this used differently than the 24 bit mode?  I know there is an
>obvious difference in bit depth that will lead to smoother histograms when
>the image is adjusted in PS (and that some adjustment and layer modes are
>unuvailable for this bit depth especially adjustment layers).  But other than
>the bit depth what is the diffrerence in formats and how are these two types
>of formats treated or manipulated differently?
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