Xref: utzoo comp.graphics:6871 rec.video:7517
Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!usc!ucsd!nprdc!malloy
From: malloy@nprdc.arpa (Sean Malloy)
Newsgroups: comp.graphics,rec.video
Subject: Re: HDTV and ATV Glossary (TN32)
Keywords: 525/59.94, 625/50, NTSC, PAL, SECAM, Component, Composite,
Message-ID: <3273@skinner.nprdc.arpa>
Date: 14 Aug 89 18:56:16 GMT
References: <120919@sun.Eng.Sun.COM> <121076@sun.Eng.Sun.COM> <278@bilver.UUCP> <26754@amdcad.AMD.COM>
Reply-To: malloy@nprdc.arpa (Sean Malloy)
Organization: Navy Personnel R&D Center, San Diego
Lines: 20

In article <26754@amdcad.AMD.COM> phil@diablo.AMD.COM (Phil Ngai) writes:
>Does anyone know if IMAX or OMNIMAX use higher frame rates, or just
>more film? 

As I understand it from the information that the Fleet Space Theater
here in San Diego hands out, the Imax cameras use one of the stock
film sizes (70mm or 135mm), but with the frames turned sideways on the
film (so that instead of the frames being aligned top-to-bottom, they
are side-to-side), and each frame is several times the size of a
normal 70mm frame. The camera uses the normal film rates (although
they did have it cranked up for the ShowScan presentation some months
ago); they wind up using more linear feet of film because of the
larger frame size.


 Sean Malloy					| "The proton absorbs a photon
 Navy Personnel Research & Development Center	| and emits two morons, a
 San Diego, CA 92152-6800			| lepton, a boson, and a
 malloy@nprdc.navy.mil				| boson's mate. Why did I ever
						| take high-energy physics?"