High Altitude - Optoma HD81 User Manual

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On: When On is selected, black levels of the image are repro-

duced with more clarity though the brightness is lowered.
There are 17 step for you adjust.
Auto: The dynamic image performance manager is active

in making sure your greatest pleasure from seeing a movie
dynamically with the most dark details revealed, vivid and
bright image performed all the way.
Projection
Front-Desktop

The factory default setting.
Rear-Desktop

When you select this function, the projector reverses the image
so you can project behind a translucent screen.
Front-Ceiling

When you select this function, the projector turns the image
upside down for ceiling-mounted projection.
Rear-Ceiling

When you select this function, the projector reverses and turns
the image upside down at same time. You can project from be-
hind a translucent screen with ceiling mounted projection.
V Keystone
Press the or to adjust image distortion vertically and makes a
squarer image.
Brite Mode
Choose "On" to increase the brightness. Choose "Off" to return
normal mode.

High Altitude

Choose "On" to turn on High Altitude mode. Operates the fans at
full speed continuously to allow for proper high altitude cooling of
the projector.
User Controls
45