Casio XJ-450 User Manual page 31

Getting Ready
The allowable projection range is from 0.8 meter (2.62 feet) to 16 meters (52.49 feet),
which is the distance from the surface of the lens to the screen.
16 m 14 m
(52.49 feet) (45.93 feet) (39.37 feet)
Screen Size 300
8.0 m to 16.0 m
(26.25 feet to 52.49 feet)
12 m 10 m
(32.81 feet) (26.25 feet)
Maximum: 16 meters (52.49 feet)
Screen Size 60
1.6 m to 3.2 m
(5.25 feet to 10.50 feet)
8 m 6 m
(19.69 feet) (13.12 feet)
31
Screen Size 30
0.8 m to 1.6 m
(2.62 feet to 5.25 feet)
4 m 2 m
(6.56 feet)
Minimum: 0.8 meter
(2.62 feet)