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ENGLISH
Projection Distance and Screen Size
Change of projection screen according to
aspect ratio
Screen with 16 : 9 aspect ratio
Screen with 4 : 3 aspect ratio
Installing the Projector (Cont.)
• For detailed relation between projection distances and projection screen sizes, refer to Appendix. The relation for both 4:3 and
16:9 are listed there.
• When adjusting the screen size, use a 4:3 aspect-ration picture. (A 16:9 aspect-ration picture is projected, based on the width
of a 4:3 aspect-ratio picture.)
• The diagonal length of a 16:9 aspect-ratio screen is about 91.8% that of a 4:3 aspect-ratio screen. This value is only a guide
(reference).
• If the keystone is adjusted, the projected screen becomes smaller.
■ Optional Lenses
This projector does not include a lens. You can select one of the optional lenses to adjust the projection distance. Please ask
your dealer to buy and install the lens.
Lens model Function
GL-MQ1010G Powered focus for rear projection, short focal length lens (subject ratio 1:1), 0% influence.
GL-MQ1015SG Powered focus, short focal length lens (subject ratio 1.5:1), manual vertical shift function pro-
vided, 0% to ±50% influence.
GL-MQ1020ZG Powered zoom/powered focus, long focal length lens (subject ratio 2.1:1 to 4.9:1), 0% influence.
GL-MQ1023SZG Powered zoom/powered focus, long focal length lens (subject ratio 3:1 to 7:1), manual vertical
shift function provided, 0% to ±50% influence.
The range of projection distances that can be focused depends on the lens unit (not supplied) to be used. When the aspect ratio
of the screen is 4:3, the range is as follows and you need to install the projector within this range.
Lens type Approximate projection distance
GL-MQ1010G 3.9 ft (1.2 m) to 25.9 ft (7.9 m)
GL-MQ1015SG 5.6 ft (1.7 m) to 40.3 ft (12.3 m)
GL-MQ1020ZG 26.2 ft (8.0 m) to 280.3 ft (85.5 m)
GL-MQ1023SZG 28.2 ft (8.6 m) to 276.1 ft (84.2 m)
The value for projection distance is a guide (reference). The projected image size may vary depending on the manufactur-
ing tolerance of the projection lens.
EN17-31QX1G_f.pm6 02.3.7, 13:3721