Message-Id: <mailto:199607250303.WAA03257@library.wustl.edu> Date: Thu, 25 Jul 1996 12:58:47 +1000 From: Lowan Turton <mailto:turtonl@AGRIC.NSW.GOV.AU> Subject: Re: color negatives To: Multiple recipients of list IMAGELIB
> >
> >
> >>>I've been told that NO scanner can successfully scan color negatives. Does
> >>>anyone have any experience refuting this claim?
> >
> >Several people have posted that some scanners can, indeed, scan color
> >negatives. Our AGFA with its transparancy adaptor, and our new HP Scanjet 4C
> >are SUPPOSED to be able to do this, but in fact they do not. The AGFA images
> >come out bluish, and it apparently has something to do with the orangish
> >color of the emulsion on color negs.
> >
> >What I am really trying to find out if anyone has SEEN images scanned from
> >color negs, and if so, what kind of scanner was used.
> >
> >Thanks.
> >Victoria Yturralde
> >Photographic Archivist
> >Calif. Dept. of Parks & Recreation
All colour negative film has an orange coloured mask incorporated in the film to make it easier to print photographically. Your scanner software needs the correct algorithms for each different colour negative film type. These algorithms take into account the orange coloured mask when they convert the negative to a positive. Some flatbed scanner software does not take into account the orange coloured mask and only converts negative to positive. If you use a film scanner as opposed to a flatbed scanner the manufacturers will have taken into account the orange coloured mask and included the correct algorithms in their software. I hope this helps clear up the problem. Lowan Turton Scientific Photographer
Email mailto:turtonl@agric.nsw.gov.au Voice +61 (02) 8435728 Fax +61 (02) 6304475 Mail NSW Agriculture Biological and Chemical Research Institute Pemberton Street PMB 10 Rydalmere NSW 2116 Australia