23
Lens Shift Adjustment
Projection lens can be moved up, down, right and left with the motor-driven lens shift
function. This function makes the positioning of images easy on the screen. Lens shift is
generally expressed as a percentage of the image height or width, see below illustration
Vertical / Horizontal Lens Shift
■
Vertical:
The lens can be moved 50% (0.5V) upward, and 25% (0.25V) downward. So if
the screen height is 50”, and use a 80”x50” screen, you can move the image upward no
more than 25” or downward no more than 12.5”.
■
Horizontal:
The lens can be moved 10% (0.1H) left or Right, If you
use a 80”x50” screen, you can move the image left or right no more 8”
Desk-Front Projection
Verticial Shift (Up)
Verticial Shift (Down)
Height of projected image
Max
0.5V
Max 0.25V
Projected image height V
Normal projection position
Verticial Shift (Up)
Verticial Shift (Down)
Height of projected image
Max
0.5V
Max 0.25V
Projected image height V
Shift to Right
Shift to Left
Width of projected image
1H
0.1H
0.1H
HD CONN
ECT/LAN
HDMI
VGA
G/Y
B/P
b
R/Pr
DV
I Dual Link
H
V
HD
BaetT
RS
-232
I
II
IR E
xt.
12V T
rigger
Y
Pb
Pr
IN
OUT
SYNC
10/100 BA
SE
-T
IN
SDI
OUT
AC
AC S
WIT
CH
VOL
TAGE SE
LEC
T
Ceiling Mount-Front Projection
Note:
This is a general example of lens shift. Lenses vary in their shift capabilities. No particular lens or pro-
jector is used in this example.
When the lens is shifted beyond the described range of operation, the screen edges may become
darker or the images may become out of focus.
