Optoma EX536 User Manual page 52

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Keystone
Select this function to store and reset Keystone after
closing the projector or unpluging the AC power .
This function is only when the option about Auto
keystone is not set On.
Store......Store Keystone after closing the projector or
unpluging the AC power .
Reset value......Keystone function will be cancelled
after closing the projector or unpluging
the AC power when the Standby mode
is set to ECO. mode .
When the Standby mode is set to
Normal, Keystone will be cancelled if
you unpluge the AC power ; while it will
be stored when closing the projector .
H/V Keystone
Select this function to correct the projected images hori-
zontally or vertically
Press button to
reduce upper width
Conner correction
Select this function to
four corners distorted.
Press button to keystone at four corners of
the screen. The four corners are looped in sequence
shown below:
Upper left
Note:
White arrow indicates no correction.
Red arrow indicates Keystone direction .
The arrow disappears when the correction come to the maximum.
Press button to
reduce bottom width
correct the projected images of
Conner correction
Upper right
Keystone sub-menu
Press button to
reduce left width
Bottom left
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Press button to
reduce right width
Bottom right