Originally Posted by fledwinter
If I was to use the Vango it would be right over my head. Most reviews say its quiet but there have been a couple that say its louder than expected. Does anyone have it 2 feet over their head?
I dont fully understand the lens shift in the Vango manual. If I have a 66x158screen, how far above the screen can the lens be? If someone can give me that number I am sure I can understand the diagram.
I never hear mine which is about 3 feet behind and 3 feet over my head. But my hearing is attenuated. Not much help to you I know.
The manual on lens shift drove me nuts. I think I concluded that the default assumption for the ranges assumes the lens is centered on the screen. A 16x9 screen. Mine is at the top edge of a 2.35 screen and since I prefer to zoom I must shift the lens by the distance of the black bar. It does that. More, I think so, but I don't know how much.
With the short throw lens, and in the case of a zoomer, the window that the projector can be in can be quite limited. My lens is about 180 inches off a screen 118 wide. If I moved it more than 4 inches forward then the lens would not zoom wide enough to fill the full 118 width. If I moved it rearward more than 4 inches then I could not zoom the 16x9 material to be as short as the vertical height of the screen. About 9 inches of front to back freedom. This works for me but I was startled and this is my fourth theater build-out. If you are not zooming to fit a scope screen than this is not an issue.
The lens shift controls don't seem to have centering detentes. So I ended up looking at where the light was exiting the lens and trying to center that. Then assuming that this meant the controls were centered. Detentes would be easier. I happen to like the straight industrial-style sides. Much easier to align the projector case.
Initially I fabbed up a mount using the 5mm bosses that harbor the feet. Bad balance. I started over and now I use the four 5mm bosses toward the center. Much better positioning WRT the center of density on the projector.
I have used an ISCO in the past and with your screen area you may need to bring all the pixels into play with an anamorphic lens to achieve the desired brightness.