Adjusting The Projector's Zoom / Focus; Adjusting Projected Image Size - Optoma HD72 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
0.92m~8.857m (36"~349") at 16:10 mode with mechanical
travel.
Adjusting Projection Image Size
Side View
Throw Ratio (TR)=1.96 as Wide mode
B
A=6.52°
(1280x768)=25.54°
H'=L X tan(A)
H (1280x768)=W (1280x768) X 0.86
0
Display Format A
16:10 (1280x768) 6.52
4:3 (1024x768) 6.52
Projection Distance (M)
Max
Screen Size 16:10
(inch)
Min
Max
Screen Size 4:3
(inch)
Min
B
(1280X768)
A
L
W (1280x768)=L/R
0
W (1024x768)=W
1
H (1024x768)=W
L W
B
(cm) (cm)
25.54 256 130.68
25.54 256 104.52
2.0 2.5 3.0
58.8 73.5 88.2
48.9 61.1 73.3
47.02 55.77 70.53
39.48 49.35 59.21
Zoom Lever
Focus Ring
Front View
W
(1024X768)
1
W
(1280X768)
0
D
(1280X768)
(1280x768) X 0.8
0
(1024x768) X 0.75
1
H H' D
(cm) (cm) (cm)
78.41 29.01 152.40 60.00
78.41 29.01 130.66 51.44
3.5 4.0 5.0
102.8 117.5 146.9 176.3
85.5 97.7 122.2 146.6
82.28 94.04 117.55 141.06
69.08 78.95 98.69 118.43
D'
(in)
6.0