> I've seen sufficiently many reports of people seeing improvements in > Epson inkjet output at ppi values up to 720 that I don't consider 240 > to be optimum. It's more like "minimum professional level" or > something -- despite the fact that I've passed off 150 ppi Epson > prints to professionals on occasion (it all depends on the subject, as > usual). With the Epson it makes no difference to print size whether you tell the printer software to lay down ink at 720 or 1440 dpi ... you just use more ink. The resolution (dpi) attached to the PhotoShop file is what it uses to determine the print size (based on pixel dimesions). As far as passing things off - the dogma does not always stand up when tested ... I entered a poster-sized print from 35 mm into a competition. The judge waxed about the fine detail obtainable from large format cameras. Little did he know. If the medium were truly limited to "4000 dpi" this would not be have been possible. Roger Clarke's site says much of it ... http://www.clarkvision.com/imagedetail/scandetail.html#printpixels
