Canon LV-7490 User Manual page 45

This function is used to adjust keystone
distortion of the projected image. Use the
Point buttons to choose the item you want
to adjust.
To correct keystone distortion, press the OK
button.
Keystone appears on the screen. Use the
Point buttons to correct keystone
distortion (p. 25).
To store or reset the keystone correction,
press the Point button.
.......... Keep the keystone correction
even when the AC power cord
is unplugged.
Reset .......... Release the keystone correction
when the AC power cord is
unplugged.
Ceiling
When this function is set to On, the picture
will be top/bottom and left/right reversed. This
function is used to project the image from a
ceiling-mounted projector.
Rear
When this function is set to On, the picture will
be left/right reversed. This function is used to
project the image from rear of the screen.
Reset
To reset the adjusted data, select Reset
and press the OK button. A confirmation box
appears and then select "Yes". All adjustments
will return to their previous figures.
Ceiling
Rear
45