P3D Re: toe-in two 2x2 projectors?

[fj834@xxxxxxxxxxxxxxxxxxxxx (Dr. George A. Themelis)]

>Does the projectionist instead try to judge infinite
>points, and set them to be 2.5 inches apart on the screen?  What if there
>are no points at infinity?

I suggest that you take the pair with the maximum deviation and adjust
the projectors so that the maximum seperation on screen is 2.5".

I have no experience with 2x2 projection or large screen projection.
I set my window on screen. I have a 70" screen but it is opened in a
rectangular shape to accommodate 7p.  So the vertical size is about
50".  That's about 50x mag (24mm is about 1").  50 x 1.2 mm = 60 mm.
1.2 mm is the suggested maximum on-film deviation.  In my setup the
maximum separation on screen is very close to 2.5".  Now I know why 
I don't have problems :-)

-- George Themelis


------------------------------