JVC DLA-QX1G Instruction Manual - Page 23
Projection Distance and Screen Size
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Installing the Projector (Cont.) Projection Distance and Screen Size 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 GL-MQ1010G GL-MQ1015SG GL-MQ1020ZG GL-MQ1023SZG Approximate projection distance 3.9 ft (1.2 m) to 25.9 ft (7.9 m) 5.6 ft (1.7 m) to 40.3 ft (12.3 m) 26.2 ft (8.0 m) to 280.3 ft (85.5 m) 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 manufacturing tolerance of the projection lens. Change of projection screen according to aspect ratio Screen with 4 : 3 aspect ratio Screen with 16 : 9 aspect ratio • 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. I 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 GL-MQ1010G GL-MQ1015SG GL-MQ1020ZG GL-MQ1023SZG Function Powered focus for rear projection, short focal length lens (subject ratio 1:1), 0% influence. Powered focus, short focal length lens (subject ratio 1.5:1), manual vertical shift function provided, 0% to ±50% influence. Powered zoom/powered focus, long focal length lens (subject ratio 2.1:1 to 4.9:1), 0% influence. Powered zoom/powered focus, long focal length lens (subject ratio 3:1 to 7:1), manual vertical shift function provided, 0% to ±50% influence. ENGLISH 21