Adjusting The Projector's Zoom / Focus; Adjusting Projected Image Size - Optoma HD80 User Manual

Installation
16

Adjusting the Projector's Zoom / Focus

Turn the Zoom Lever to zoom in or zoom out. To focus the
image, turn the focus ring until you see a clear image. The
projector will focus at distances from 4.9 to 39.4 feet (1.5 to
12.0 meters) and the projection screen size from 0.775m~7.62m
(30.5"~300") at 16:9 mode with mechanical travel.
Zoom Lever
Focus Ring
Adjusting Projection Image Size
Side View
Throw Ratio (TR)=1.85 as Wide mode
B
A=6.25°
(1920x1080)=22.47°
H'=L X tan(A)
H (1920x1080)=W (1920x1080) X 0.56
0
Display Format A
16:9 (1920x1080) 6.25
4:3 (1440x1080) 6.25
Projection Distance (M)
Max
Screen Size 16:9
(inch)
Min
Max
Screen Size 4:3
(inch)
Min
B
(1920X1080)
A
L
W (1920x1080)=L/TR
0
W (1440x1080)=W
1
H (1440x1080)=W
L W
B
(cm) (cm)
22.47 245.73 132.83
22.47 245.73 99.62
2.0 2.5 3.0
48.8 61.0 73.3
40.7 50.9 61.0
39.9 49.9 59.9
33.3 41.6 49.9
Front View
W
(1440X1080)
1
W
(1920X1080)
0
D
(1920X1080)
(1920x1080) X 0.75
0
(1440x1080) X 0.75
1
H H' D
(cm) (cm) (cm)
74.72 26.90 152.40
74.72 26.90 124.53
3.5 4.0 5.0
85.5 97.7 122.1
71.2 81.4 101.7
69.8 79.8 99.8
58.2 66.5 83.1
D'
(in)
60.00
49.03
6.0
146.5
122.1
119.7
99.8