Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83; site brl-vgr.ARPA Path: utzoo!watmath!clyde!floyd!harpo!seismo!brl-vgr!ron From: ron@brl-vgr.ARPA (Ron Natalie) Newsgroups: net.columbia Subject: Re: 70mm shuttle film to be made! Message-ID: <2211@brl-vgr.ARPA> Date: Wed, 7-Mar-84 17:50:49 EST Article-I.D.: brl-vgr.2211 Posted: Wed Mar 7 17:50:49 1984 Date-Received: Sat, 10-Mar-84 14:29:42 EST References: <219@ll1.UUCP> <374@t4test.UUCP> Organization: Ballistics Research Lab Lines: 19 The reason the field is wider is because the actual area of film per frame greater. This is accomplished by making the recorded image 70mm (less sprocket holes) high. This appears to be sideways from most film formats who use the 70mm dimension as the width of the image. Conventional 70mm also has space allocated for soundtrack. IMAX uses a separate piece of 35mm magnetic coated film (tape?) for sound. There is no squeezing of the picture (like cinemascope or panavision). There are two modes of operation. Conventional IMAX is for showing on flat screens. These are typically 70' by 50'. OMNIMAX uses a different lens that gives a fishbowl effect for showing on round surfaces (like the inside of a planetarium dome). I'm not overly fond of OMNIMAX. Anyone know if they are going to shoot only IMAX, only OMNIMAX or a combination? -Ron