I agree in regard to resampling the digital image. It seems the software has a
much easier time of it when you're trading one pixel for two rather than one
for two-and-a sixteenth <g>. The only time I resample a digital image is when I
get one off the web that I want to "res up" for printing. I try never to change
the pixel count of images I scan.
I've been womdering what a 7 x 10 of that 250 meg scan (that I mentioned
the other day ) would look like. At 11 x 14 it was 743 ppi. It should be well
over 1000 at 7x10. I'll have to give it a try.
Paul
Tom Rittenhouse wrote:
> Well, actually, I have never heard that it is all that importand to use a
> devisor of the printer dpi, what is reported to maintain the best image
> quality is resampling on a devisor. Like if you scanned at 2400 dpi and you
> need to reduce the size of the image resample at 1200, 800, or 600, etc.
> That is supposed to maintain edge sharpness, etc. the best. On the other
> hand resampling at odd vailues is supposed to reduce artifacts, etc. Etc:-)
>
> Ciao,
> graywolf
> [EMAIL PROTECTED]
>
> ----- Original Message -----
> From: Paul Stenquist <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Thursday, January 03, 2002 8:51 PM
> Subject: Re: Digital printing questions
>
> > I don't use a divisor, and I've never encountered a moire pattern. I have
> > tried using a divisor, but I eventually learned that it accomplished
> > nothing. I've made close to a thousand hi-res prints. I'm sure you've made
> > more Aaron, but have you worked extensively without a divisor? In order to
> > achieve the divisor at a given print size, you have to resample the image.
> > That is perhaps the most damaging thing one can do. The printer resolution
> > numbers don't correspond in any way to the ppi counts of digital files.
> > Congratulations on the 75/2.8 purchase. I anxiously await your
> > appraisal. I picked up a late model 105/2.4 off ebay to add to my 150/2.8.
> > I think the 55/4 is my next buy, but I'd also like the 75. KEH doesn't
> > have it yet, or at least they don't list it on their website. Do you want
> > to whisper how much you paid for it? :-)
> > Paul
> > Aaron Reynolds wrote:
> >
> > > The reason one uses a divisor of the printer's resolution is to avoid
> > > moire patterns in finely detailed objects. Nothing like having a plaid
> > > shirt with a different pattern running through it...
> > >
> > > -Aaron
> > > -
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