ViewSonic PX704HD User Manual page 46

Menu
Format
Edge Mask
Zoom
Image Shift
V. Keystone
Auto Keystone
Select the aspect ratio of the projected image.
Aspect Ratio
4:3
16:9
LBX
Native
Auto
Remove the video encoding noise on the edge of the video
source.
Reduce or magnify the projected image.
Adjust the projected image horizontally or vertically.
Adjust image distortion vertically.
Automatically correct the keystone.
46
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
want to display 2.35:1 aspect ratio in
full resolution.
Projects the image as its original
resolution and resizes it to fit within
the display area. For input signals
with lower resolutions, the projected
image will be displayed in its original
size.
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.