Acer K520 - Manual (Page 21)

11
English How to optimize image size and distance
Consult the table below to find the optimal image sizes achievable when the
projector is positioned at a desired distance from the screen. Example: If the
projector is 2.5 m from the screen, good image quality is possible for image sizes
between 57" and 63".
Note: Remind as below figure, the space of 111 cm height is
required when located at 2.5 m distance.
Figure: Fixed distance with different zoom and screen size.
Max screen size
63"
Min screen size
57"
Min screen size
57"7
A
C
B
2.5 m
Desired Distance
Height: 111 cm
Form base to
top of image
Height:
100cm