Hi all Good question Laurie. I see you have asked it several times. The one about what the printer does with the binary data you send it. I vaguely recalled seeing this explained, so it didn't take long to find this link http://www.ddisoftware.com/qimage/quality/ The Lanczos interpolation really does seem to make a difference. Darrell
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Laurie Solomon Sent: Thursday, October 23, 2003 5:50 PM To: [EMAIL PROTECTED] Subject: [filmscanners] RE: Pixels and Prints Bob, If true than I would think that this would be something important to know and play an important role in how one approaches things. I would have thought that to maintain quality output, they would have selected to design the printers to resample rather than merely discard pixels in an arbitrary or random manner. Surely, they use some sort of formula for determining what to discard and what to keep. [EMAIL PROTECTED] <> wrote: > Laurie, > > I thought I had read somewhere that if you send images to the Epson > driver with dpi that are larger than its native dpi (360/720) it > simply discards rows of pixels as scanners often do, rather than > downsample them by any interpolation method. > > Bob Frost. > > ----- Original Message ----- > From: "LAURIE SOLOMON" <[EMAIL PROTECTED]> > > I do concur with your conclusion; and in practice, do what you > suggest. From a theoretical point of view, I was just curious about > the answer to the question given that so many in the discussion were > arguing that if one sent the printer a file with less than its native > resolution the printer would perform an interpolation using nearest > neighbor techniques which would lower the quality of the output but > did not mention the effect of the oposite case where one sent a file > that had a resoution higher than the printer's native resolution. > Thus, leaving open the question as to which theoretically would be > the best option to take if one were to have a choice - e.g., letting > the printer upsample to its native resolution or downsample to its > native resolution. > > -------------------------------------------------------------- > -------------------------- > Unsubscribe by mail to [EMAIL PROTECTED], with 'unsubscribe > filmscanners' or 'unsubscribe filmscanners_digest' (as appropriate) > in the message title or body > > > --- > Incoming mail is certified Virus Free. > Checked by AVG anti-virus system (http://www.grisoft.com). > Version: 6.0.525 / Virus Database: 322 - Release Date: 10/9/2003 --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.525 / Virus Database: 322 - Release Date: 10/9/2003 ---------------------------------------------------------------------------- ------------ Unsubscribe by mail to [EMAIL PROTECTED], with 'unsubscribe filmscanners' or 'unsubscribe filmscanners_digest' (as appropriate) in the message title or body ---------------------------------------------------------------------------------------- Unsubscribe by mail to [EMAIL PROTECTED], with 'unsubscribe filmscanners' or 'unsubscribe filmscanners_digest' (as appropriate) in the message title or body
