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From: mikeos on 3 Jan 2010 05:20
Arthur Entlich wrote:
> In order to scan any type of films (negative or transparency), the
> scanner requires a back lighting source which goes through the film so
> that the scanner sensor can "see" the image on the film. Usually this
> backlight is built into the scanner top, if it exists, and when it is
> turned on through software, the lower scanner lamp turns off. The
> "normal" scanner light illuminates from the bottom to light reflective,
> rather than transmissive images sources, like paper and prints.
>
> Some people use reflective print scanners with slides and negs but the
> result is quite inferior and requires a lot of manipulation to get
> anything approaching useful.
>
> Also, if you wish to scan things like 35mm slides or negs, besides
> needing the backlighting top you will require both a high resolution
> optical scanning ability (at least 1000 ppi) and software for inverting
> the color and removing the orange cast found in negative color film.

Thanks for that detailed info.

Mike
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