Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site wdl1.UUCP Path: utzoo!watmath!clyde!burl!ulysses!mhuxr!mhuxt!houxm!ihnp4!qantel!hplabs!hpda!fortune!wdl1!jbn From: jbn@wdl1.UUCP Newsgroups: net.graphics Subject: Re: Re: Stereo Picture TV Message-ID: <482@wdl1.UUCP> Date: Thu, 11-Jul-85 16:19:36 EDT Article-I.D.: wdl1.482 Posted: Thu Jul 11 16:19:36 1985 Date-Received: Wed, 17-Jul-85 05:55:06 EDT Sender: notes@wdl1.UUCP Organization: Ford Aerospace, Western Development Laboratories Lines: 19 Nf-ID: #R:ecsvax:-158700:wdl1:14000006:000:969 Nf-From: wdl1!jbn Jul 11 12:37:00 1985 About two years ago American Cinematographer had an issue on 3D, in which the subject of making 3D movies that don't cause eyestrain was discussed in much detail. This is a non-trivial problem, because we want to put images on the screen that aren't in 1:1 scale with reality, and this implies that certain arbitrary choices must be made about the viewing plane. But there's a custom calculator available to help make them. By the way, the most common cause of eyestrain in 3D movies is misadjusted projector optics. Look at the image without glasses; if there is any horizontal misalignment visible between the two images, the 3D splitter isn't mounted straight. There is a 3D alignment leader available through SMPTE which if projected through the 3D splitter but viewed without polarized glasses makes it instantly obvious if things are misaligned. Mention this to your theater manager as you are demanding your money back. John Nagle