Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/17/84; site rduxb.UUCP Path: utzoo!watmath!clyde!burl!ulysses!mhuxr!mhuxt!rduxb!smh From: smh@rduxb.UUCP (henning) Newsgroups: net.rec.photo Subject: Re: Projection Lenses Message-ID: <557@rduxb.UUCP> Date: Tue, 9-Jul-85 20:01:23 EDT Article-I.D.: rduxb.557 Posted: Tue Jul 9 20:01:23 1985 Date-Received: Thu, 11-Jul-85 07:19:50 EDT References: <2612@wateng.UUCP> <3961@alice.UUCP> Organization: AT&T Bell Laboratories, Reading, PA Lines: 12 > There is an easy way: take two identical slides down to the store, > ask the dealer to set up two projectors side by side, one with > an Ektanar and one with the "RAYNOX", and compare images. **** **** From the keys of Steve Henning, AT&T Bell Labs, Reading, PA rduxb!smh There is one more thing you must do. Use a matte screen or even a plain piece of white card board or a white wall if it is very flat. Do not use a beaded or lenticular screen. They are designed for brightness and not image sharpness. Since most projectors are used on one of these screens which diffuses the image, a sharp lens is not always necessary.