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BenQ W1300.book Page 21 Thursday, August 29, 2013 2:07 PM
Shifting the projection lens
The lens shift control provides flexibility for installing your projector. It allows the
projector to be positioned off the center of the screen.
The lens shift is expressed as a percentage of the projected image half height. It is
measured as an offset from the projected image’s vertical center. You can shift the
projection lens within the allowable range depending on your desired image position.
•
When the screen position is fixed
UP
LE
W
NS
SH
IF T
N
100%
DO
Screen
28%
20%
Center of lens
Projector
•
When the projector position is fixed
148%
UP
LE
DO
W
NS
SH
IF T
130%
N
120%
Center of lens
Lens shift adjustment will not result in a degraded picture quality. In the unlikely event that the
image distortion is produced, see "Correcting keystone" on page 30 for details.
Positioning your projector
21