Join Date: Mar 2010
Location: Northern Virginia
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Do I need a curved screen?
I am planning a 2.40 aspect ratio, 173"W and 72"H screen (187" diagonal) with the projector at a distance of 31'.
Using the 'circle calculator' at 1728.com, my 'segment height' (i.e. 'depth of curve' from edge to center) is only 0.84". Is a curved screen necessary, and is it worth the trouble? I understand that it is necessary if the throw distance is small. I am trying to maximize the throw distance for a number of reasons (put the PJ in a different room behind the theater and isolate PJ noise, reduce distortion by minimizing zoom, and reduce the need for curved screens).
Also, I am assuming that the distortion that the curved screen needs to correct for using an anamorphic lens is in only one plane - horizontal, by curving the flat screen in only one radius. There is no need to correct for it in the other vertical plane. Correct?