On Thursday, June 27, 2002 at 13:34, Walt Wayman <olympus@xxxxxxxxxxxxxxx>
wrote re "Re: [OM] Re: archive slide scannin" saying:
> >I would warn against saving ANY archival scans with the JPG format. It
> is a lossy format which compresses the pixels when saved by averaging.
> Then every time you open a JPG and save it again, it compresses
> (averages) the pixels once more. files can quickly become "blocky".
>
> Use a TIF or a PNG for archiving. They are lossless - meaning you never
> lose informaion by saving and resaving. When you want to send a copy to
> someone or put it on the web, save it as a JPG.
>
> Conrad<
>
> Well, duh, of course. My archives are the slides themselves. I wouldn't
> dream of "archiving" them in any digital format, TIFF or any other, each
> and every one of which sucks, when you get right down to it. I've got
> Ektachrome superslides from the late 1950s that I shot with my first "real"
> camera, a Yashica 44 twin lens reflex, and that I processed myself -- it
> was E-2 or 3 back then -- and mounted in cardboard mounts, sealed with my
> mother's iron, and they look pretty much the same today as they did then,
> because they've been properly stored. And I expect they'll last a bit
> longer because they're still properly stored.
>
> My eyes are analog, not digital, and my pictures are, too, and will stay
> that way in my archives. Digital is just a convenience, like PhotoShop,
> which, IMO, is mainly a crutch for incompetent photographers who couldn't
> get it right in the camera to begin with. :-)
The original is the truest archive.
If you have to convert to digital, something is inevitably lost.
Digital formats may change. OTOH, fungus, light, air pollution, or age may
change emulsions.
If you have to copy, digital is best because further copies can be
lossless. Copying is a good idea, because you can't store those slides and
negatives in two physical places at once, but you can archive those TIFs or
PNGs in as many places as you wish. Yosuf Karsh stored his important negs
in a safety deposit box.
Tom--
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tOM Trottier, ICQ:57647974 http://abacurial.com
758 Albert St, Ottawa ON Canada K1R 7V8
+1 613 860-6633 fax:231-6115 N45.412 W75.714
"The moment one gives close attention to anything,
even a blade of grass, it becomes a mysterious,
awesome, indescribably magnificent world in itself --
Henry Miller, 1891-1980
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