"J. C. O'Connell" <[EMAIL PROTECTED]> wrote:

>I can see from my 35mm 100 speed film
>negs that the 2400 dpi scanner I'm using
>is inadequate. Will 4800 ppi settle the
>matter once and for all or should I be waiting
>until 6400 or 7200 ppi scanners arrive to upgrade?

This is a slightly controversial subject but I tend to agree with Michael
Reichmann of Luminous Landscape that there's no practical benefit in going
over about 4000 dpi - beyond that point the data you get is more about film
grain than image information. He actually scans only up to 3200 dpi but most
good film scanners these days are 4000 dpi resolution. 

You'd be surprised at the difference going from 2400 dpi just up to 2800
dpi, by the way. The difference in appearance is much greater than jou'd
guess just from looking at the numbers. Stepping up to 3600 or 4000 dpi will
be a real eye opener, I guarantee you!

My scanner, a Kodak RFS 3600, scans at 3600 dpi, which is good enough for
excellent 12 x 18 prints (as big as I care to go from 35mm film and as big
as I *can* print with my Epson 1270).


-- 
Mark Roberts
Photography and writing
www.robertstech.com

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