Adjusting The Projector Zoom / Focus; Adjusting Projected Image Size - Acer PH110 User Manual

Installation
You may turn the zoom ring to zoom in or out. To focus the image,
rotate the focus ring until the image is clear. The projector will focus
at distances from 3.94 to 39.4 feet (1.2 to 12.0 meters).
324
270
PROJECTION
DISTANCE
16:9 SCREEN
SIZE - DIAGONAL
(INCH)
English...14

Adjusting the Projector Zoom / Focus

Adjusting Projection Image Size
270
189
225
157.5
1.2 1.5
(METER)
32.4 40.5
Wide
Tele
27 33.75
This graph is for user's reference only.
Zoom Ring
Focus Ring
135
81
32.4
112.5
67.5
27
2 2.2 3 4 5
54 59.4 81 108 135 162
45 49.5 67.5 90 112.5 135
3.94' (1.2m)
9.84' (3.0m)
16.40' (5.0m)
22.97' (7.0m)
32.81' (10.0m)
39.4' (12.0m)
6 7 8 9 10
12
189 216 243 270 324
270
157.5 180 202.5 225