Archived posting to the Leica Users Group, 1997/11/30
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Nick: There's a bit of voodoo with all of this. Probably somewhere in the middle would work. I've never used a 1440x720 printer and I don't know what LPI they can resolve. My guess is that they could handle 133 just fine with the good coated paper that keeps dot gain to a minimum. If you store an image at 270 PPI, you would have plenty of data for even a 150 line screen. Tom At 06:42 PM 11/30/97 -0500, you wrote: >This is in response to Tom Kachadurian's very informative post on DPI/LPI/PPI. >Tom said: > >>Keep these numbers in mind: >> >>600 DPI printer: 85 line screen (LPI) >>720 DPI printer: 100 line screen (LPI) >>1400 DPI printer: 150 line screen (LPI) >> >>Now, you need an image file that has a PPI of about double your target LPI. >>(You can often get by with 1.5x.) So, a 600 DPI printer needs a 170 DPI >>file. A 1400 DPI printer, like the Epson Photo needs a 300 PPI file. > > >The Stylus Photo, I believe, is 720 X 720. The Stylus 800 is 1440 X 720. > >For printers like the 800 should we use the higher resolution, the lower, >or in-between, when figuring possible LPI? > >Please understand I am not taking issue with Tom. Just a footnote. > >Nick Hunter > > > >