ViewSonic V52HD User Manual page 45

Menu
Aspect Ratio
Zoom
Keystone
Select the aspect ratio of the projected image.
Aspect Ratio
4:3
16:9
L.BOX
Full
Auto
Reduce or magnify the projected image.
Option
Four Corners
H. Keystone
V. Keystone
Reset
45
Description
Description
Scales an image so that it is displayed
in the center of the screen with a 4:3
aspect ratio. This is most suitable for
4:3 images like computer monitors,
standard definition TV, and 4:3
aspect DVD movies, as it displays
them without aspect alteration.
Scales an image so that it is displayed
in the center of the screen with
a 16:9 aspect ratio. This is most
suitable for images which are already
in a 16:9 aspect, like high definition
TV.
For non-16:9 letterbox source and
if you use an external 16:9 lens to
display 2.35:1 aspect ratio in full
resolution.
Extend the image to fully fill the
screen.
Scales an image proportionally to fit
the projector's native resolution in its
horizontal width. This is suitable for
the incoming image which is neither
4:3 nor 16:9 and you want to make
the most use of the screen without
altering the image's aspect ratio.
Description
Adjust each corner to make a square
image when the projection surface is
not level.
NOTE: While adjusting the Four
Corners, the Aspect
Ratio, and Zoom menus
will be disabled. To
enable them, reset the
Keystone settings to
default.
Adjust image distortion horizontally.
Adjust image distortion vertically.
Return the Keystone settings to
default.