I wouldn't throw away the originals, but CDs need careful storage too.
The classic way to preserve colour images is to make three copy B+W
negatives with different filters, since silver is far more stable than
dyes.
Tom
On Thursday, June 27, 2002 at 18:41, Winsor Crosby
<olympus@xxxxxxxxxxxxxxx>
wrote re "Re: [OM] Re: archive slide scannin" saying:
> >Walt, you're right that the ultimate authority on the image is the film
> >itself, but the life of film is not infinite. While proper storage can
> >extend the life of film, at some age the color dyes -will- break down. A
> >careful digital scan, capturing as much of the data off the film as is
> >possible, then preserved in a recoverable format, can be a much longer-lived
> >archive.
...
> I would wonder even if there is some fading of some of the dyes
> whether more recoverable information might be preserved on the film
> over a long period of time than than be gotten currently off a scan,
> especially one done currently by consumer grade machine that is not
> optimized for film. That low quality scan is forever. Restoration
> software like Digital ICE cubed and Photoshop will only get better.
>
> Seems to me a more efficient plan might be to keep an eye on the well
> stored slides and when there is noticeable fading to decide which
> ones you really want to keep and then rebalance the color and scan
> them with the best scan you can afford. Silica gel in tight ph
> balanced boxes should control deterioration to a large extent.
--
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