Talk:Academy ratio

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I'm editing the ratio given for anamorphic. It's 2.35:1, not 2.39:1.

KC —Preceding unsigned comment added by Thereelghostbuster (talk • contribs) 03:19, 8 October 2007 (UTC)


 * I wouldn't do that, since it would be the wrong information. See anamorphic format for more details. Girolamo Savonarola 03:21, 8 October 2007 (UTC)

Hello, everybody
To the best of my knowledge the standard A. M. P. A. S. or Academy picture image aspect ratio is 3 to 4 or 4 to 3 as it has been since the beginnings of Dickson's work. All through the silent era screens were in the 3:4 proportion and that ratio was maintained into the talkies and until 1952 when CINERAMA first broke it up. The actual aperture measurements should not be taken as absolute. According to the basic idea of the ISO 2939 standard the projector aperture should be the biggest one that can be inscribed within the values and tolerances given. When the camera aperture is in the region of 1:1.375 it is only accidental. What counts is always what is shown. From experience the three-to-four aspect is very dynamic. It helps the action on the screen come out. An exact square picture by comparison looks rather rigid or constraining. Filmtechniker-80.219.86.238 (talk) 11:57, 26 December 2007 (UTC)

Academy ratio is generally defined as 1.33:1. This isn't the view of 'laymen'; you'll find this definition in many authoritative sources (Ephraim Katz, Kevin Jackson and the Oxford Companion to Film, for example). —Preceding unsigned comment added by Lionel Shanks (talk • contribs) 21:56, 27 July 2010 (UTC)


 * Academy aspect ratio for sound 35mm film was standardised at 1.37:1 for sound films in the 1930s. There is no aspect of 1.375:1 I suspect someone has found that 1.37:1 cannot be expressed as two integers, what with 137 being a prime number. but found that 1375 and 1000 have the common denominator of 125, and shifting to1.375 so could express the aspect ratio as 11:8 (probably in frustration at trying to get an sound era academy aspect crop in VLC!)


 * Neither of the two books that the article references at this point mention 1.375 and I believe no such textbook or manual does so (the Monaco repeatedly says 1.33:1, (Monaco says 1:33:1, Bordwell and Thompson 1.33:1 for silent films 1.37:1 for sound) . The ASC manual should be authoritative on this (Page 34 of the 9th edition, I'm afraid the reference isn't online) rather than a film studies textbook. While there can be some debate around 1:33 and 1:37 as both have been academy at different points, I will remove references to 1.375 and 11:8. Verlaine76 (talk) 15:19, 5 September 2012 (UTC)


 * I take back some of what I said, a friend has point out to me that indeed the projector gate determined for SMPTE academy aspect is when properly calculated gives a result of 1.375:1. However I stand by what I wrote above that this value is not reflected in any terminology in the proper literature, the aspect ratio is always given as 1.37:1. or 1.33:1. I therefore suggest that that remains the case here for parity with all academic and technical terminology and that my changes stand. Someone more pedantic might like to point out that the true mathematical value of the projector aspect is 1.375. Verlaine76 (talk) 12:45, 6 September 2012 (UTC)