Projector Distance and Picture Size Relationship
■The zoom lens allows adjustment of the image size within the projector’s range.
■For optimum picture adjustment, the projector should be placed and adjusted at a distance between 5.1 ft to 56.3 ft from the screen.
Distance from screen
Picture size: 100 inches (254 cm)
Zoom adjustment range: 18.4 ft to 13.1 ft
Picture size | Projection distance (L) | |
(diag.) | Maximum projection distance | Minimum projection distance |
300 inches | 56.3 ft (17.2 m) | 40.0 ft (12.2 m) |
150 inches | 28.0 ft (8.5 m) | 19.9 ft (6.1 m) |
100 inches | 18.5 ft (5.7 m) | 13.1 ft (4.0 m) |
80 inches | 14.8 ft (4.5 m) | 10.4 ft (3.2 m) |
60 Inches | 11.0 ft (3.4 m) | 7.8 ft (2.4 m) |
40 inches | 7.2 ft (2.2 m) | 5.1 ft (1.5 m) |
The formula for picture size and projection distance y1 = 0.0575 x – 0.097
y2 = 0.041 x – 0.0943
x : Picture size (diag.) (inches)
y1 : Maximum projection distance (m)
y2 : Minimum projection distance (m)
Note:
There is an error of ± 4 inches (± 10 cm) in the formula above.
90° | 90° |
|
Minimum L: 13.1 ft (4.0 m)
Maximum L: 18.5 ft (5.7 m)
Distance between lens and screen: Projection distance (L)
Lens center
→
Diagram shows the lens shift position set at the factory.
•Above is an illustration of maximum and minimum projection distances for the
Height of projector
■Adjust to match the setup configuration.
Screen |
Lens center |
→ |
H |
Rack/ |
stand |
Lower edge of screen (white portion)
Picture size | Distance from lens center to |
(diag.) | lower edge of screen (H) |
|
|
300 inches | 25 63/64 inches (66 cm) |
150 inches | 12 63/64 inches (33 cm) |
100 inches | 8 21/32 inches (22 cm) |
80 inches | 7 3/32 inches (18 cm) |
60 Inches | 5 1/8 inches (13 cm) |
40 inches | 3 35/64 inches (9 cm) |
•Ceiling Mount
When the projector is in the inverted position, use the upper edge of the screen as the base line.
Note:
•Optimal image quality can be achieved with the projector positioned perpendicular to the screen.
High edge of screen
H
Lens→center
