Digital BW, The Print

Mike, this has come up before, and I'm still unclear how you accomplish both
the below and scan at the native resolution of the scanner.  Basically, I
think you are putting the DPI of the final print above the scan quality.

If you are scanning a 4x5  to print at ~20x24 @300 DPI, you need a file with
pixel dimensions of ~6000x7200; therefor you need to scan the 4x5 @ ~1500
DPI.  But you can't if you are scanning w/ native resolution only!  You
either have to scan @ 1333 DPI or @ 2000 DPI if you want native resolution.
If you force the scanner to scan @ 1500 DPI, I believe it will actually scan
@2000 DPI and rez down from there. (I think this is actually the source of
what you describe as scans with less apparent grain)

The opposite, scanner-centric process, would be to scan at the next higher
scanner setting than you think you'll need, i.e. 2000 DPI, yielding an
8000x10000 pixel file, and then print to 20x24 at ~400 DPI.  There are many
grain -reducing techniques that, combined with this approach, I believe
result in  prints with higher definition without increased grain.

(Are your 15 minutes up yet)  ;^)

Bill Morse
PhotoProspect
Cambridge, MA 02139



----- Original Message -----
From: "Michael Kravit" <michael.kravit@...>
To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
Sent: Saturday, April 06, 2002 12:46 AM
Subject: Re: [Digital BW] The 7 Truths of Digital Printing!


> Julian,
>
> I scan to a final size of 20"x24" or so. That way 99% of what I print will
> be smaller. If I must rez up, I do so with Genuine Fractals.
>
> Mike
>
>
> ----- Original Message -----
> From: "Julian Thomas" <julianthomas@...>
> To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
> Sent: Friday, April 05, 2002 2:20 PM
> Subject: Re: [Digital BW] The 7 Truths of Digital Printing!
>
>
> > Mike, try it - I swear by it. It makes even my haulage neg. printable!
BTW
> > you mention scanning at  final output dpi rather than the full optical
> res.
> > How do you resize, or do you scan multiple copies?
> >
> > Julian
>
>
>
>
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