BenQ PE5120 - Manual (Page 15)

15 Positioning your projector
Obtaining a preferred projected image size
The distance from the projector lens to the screen, the zoom setting, and the video format each factor in the
projected image size. BenQ has provided separate tables of dimensions for both 16:9 and 4:3 screen ratios to
assist you in determining the ideal location for your projector.
1. Figure out the aspect ration of your screen, 16:9 or 4:3?
2. Select the Screen Size you desire from the 16:9 ration screen dimension table or 4:3 ratio screen dimension
table below, according to what screen type you have. Install the projector at a distance from the screen
corresponding to between the Min. and Max. Projection Distance values in the table.
3. Decide the exact height of your projector.
For example, if you are using a 16:9 screen with 80 inches diagnally, you are suggested to place your projector
within a range between 2.76m to 3.39m from the screen. The exact heigh of your projector will be 33 to 34cm
above or below your screen from the center of the lens.
Ceiling installation for a 16:9 (widescreen) ratio screen
Floor installation for a 16:9 (widescreen) ratio screen
Screen
Hei
ght
Projection Distance
Type
Offset
Ceiling
Center of the lens
Projection Distance
Screen Type
He
ig
ht
Offset
Floor
Center of the lens