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Author Topic: Short Throw Projection Louis Bornwasser Film God Posts: 4441 From: prospect ky usa Registered: Mar 2005 posted 10-18-2005 12:18 PM                        Amplifying John's reply: It is the treatment of the area next to the screen that seperates good architects from bad. In the "glory days" the very large screens did not even approach the limits of the wall width. One treatment is a diagonal wall which also had the side-benefit of "bending" the vanishing points of the side walls to point at the screen. Another is drapes. Another is a fancy wall with alcoves and statues, etc. Largeness on a wall is not showmanship; in fact it can be quite obnoxious. Louis  |  IP: Logged Amanda Mundin Expert Film Handler Posts: 122 From: Belper, Derbyshire, UK Registered: Sep 2005 posted 10-19-2005 03:40 AM                     What do people think of the theory that the ideal screen size should subtend to a horizontal angle of 45 degrees at the prime seat (2/3rds back) as mentioned in the Dolby Technical Guidelines? It says Fox came up with this theory back in 1953 when it introduced Cinemascope, do people still stick to this ideal?  |  IP: Logged John Pytlak Film God Posts: 9987 From: Rochester, NY 14650-1922 Registered: Jan 2000 posted 10-19-2005 10:05 AM                        For a scope (2.39:1 aspect ratio) picture, that 45-degree angle is in agreement with a seat about 3 picture heights from the screen, which is the same aim distance specified for critical viewing in screening rooms in standard SMPTE 196M-2003. Here is the exact wording of the standard: quote: 9 Review room viewing conditions All observers in a review room shall be located within a standard observing area which shall be: a) within the limits of a 15° angle on either side of a perpendicular to the center of the screen, in both the horizontal and vertical planes; and b) at a distance of 3 picture heights ± 1 picture height from the screen. So your "best" seats are between 2 and 4 picture heights from the screen. Most theatres have additional seating as close as about 1 picture height, and at the back of the auditorium, beyond 4 picture heights.  |  IP: Logged

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