From: utzoo!decvax!cca!Kosower@PARC-MAXC@sri-unix Newsgroups: net.works Title: Display Resolution Article-I.D.: sri-unix.2453 Posted: Wed Aug 4 21:21:42 1982 Received: Thu Aug 5 06:26:32 1982 1400 lpi seems to be the point at which further increases in resolution are nearly impossible to detect (even for experts). Several photocomposers (Autologic, Compugraphic, and Mergenthaler) generate ~1400 lpi output. Although 1000 lpi might possibly be adequate for some applications, 1400 is probably the only adequate resolution for truly high-quality publications (e.g. books). 200 lpi (as mentioned by Bern Niamir) is completely inadequate, as anyone who has ever looked at XGP output will readily admit. Furthermore, while increasing the number of gray-scales improves the effective resolution for bit graphics (e.g. photos), it does little good where sharp outlines are required, as in typeset material or symbolic graphics. Making the outlines fuzzy is hardly a substitute for increasing the resolution. David.