Epson EMP 7800, Руководство пользователя

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Adjusting the Screen Image
Adjusting the Image Angle
If the projector is set up so that it is at a horizontal or vertical angle to the
screen, adjust as follows.
If the images are being projected onto a screen that is higher than the
position of the projector, extend the front adjustable foot to tilt the
projector.
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If the images are being projected onto a screen that is lower than the
position of the projector, lift up the back of the projector to tilt it.
When the projector is tilted in this way, it may cause keystone distortion to
appear in the images. If this happens, you can use the keystone correction
function to correct this distortion.
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If the projector cannot be set up directly in front of the screen, you can
project images at a horizontal angle to the screen. If keystone distortion
appears in the images, you can use the projector's "H-Keystone" and
"Quick Corner" functions to correct this keystone distortion.
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Tilting the projector vertically with respect to the screen
When projecting from the side of the screen