At 2:07 PM -0800 3/6/01, Mike Veglia wrote:
The best digital prints I have heard of so far are actually only ~300dpi
(Lightjet digital enlarger on to Crystal Archive paper). 304.8dpi to be
exact ;-) Check out this lab: http://calypsoinc.com/
I used them for Cibachromes years ago and they no longer offer that
service because they claim to produce *better* prints now digitally.
Hard to argue with their customer list. They also claim aproximately 50%
greater enlargement capability with this process than could be achieved
with conventional photographic process (Ilfo/Cibachrome).
The Olympus Dye-sub printers are 300dpi. For Epson inkjet printing you
only need 240dpi. Keep in mind, 300dpi/ppi is still a whole bunch of
pixels if you're printing a large print (like some of the banners
Calypso produces).
The importance of DPI changes substantially depending on whether you are
working with continuous tone or some kind of fixed dot. If you can put down
300 spots^2 per inch of whatever color/value you please, it will be darn
hard to tell the result from the real object much less any kind of photo.
Most digital printing processes can put down only dot/no dot in any given
position, or at best a small range of dot sizes/values. (size isn't really
accurate as a description because everything spreads when it hits the paper,
so the perceived color/value is the relevant quantity) That's why Epson is
going to 2880 dots per inch and so forth...
300 dpi continuous tone would be just fine with me, especially, say, in
14x20 inch size...
paul
--
Paul Wallich pw@xxxxxxxxx
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