Optoma 1080p DLP - Manual (Page 27)

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User Controls
 LBX: This format is for non-16x9, letterbox source and for
users who use external 16x9 lens to display 2.35:1 aspect ratio
using full resolution.
Detail informations about LBX mode :
1. Some Letter-Box DVDs are not enhanced for 16x9 TVs. In
this situation, the image will not look right when dis-
played in 16:9 mode.
In this situation, please try to using the 4:3 mode to view
the DVD.
But if the content itself is not 4:3, it will have black bars
around the image in a 16:9 display. For this kind of con-
tent, you can use LBX mode to fill the image in the 16x9
display as much as possible.
2. If you use an external 16x9 lens, this LBX mode also allows
you to watch a 2.35:1 content (include Anamorphic DVD
and HDTV film source) that support anamorphic wide is
enhanced for 16x9 Display in a wide 2.35:1 image.
In this case, there are no black bars, the full lamp power
and vertical resolution is fully utilized for maximum view-
ing effects.
Other than these two occasions, one should stay with 16:9
and 4:3 modes for most viewing experiences.
Overscan
Overscan function removes the noise in a video image. Overscan
the image to remove video encoding noise on the edge of video
source.
Edge Mask
 Press the to reduce the size of an image.
 Press the to magnify an image on the projection screen.
H Image Shift
Shifts the projected image position horizontally.
V Image Shift
Shifts the projected image position vertically.
(*) Each I/O has differ-
ent setting of “Over-
scan”.
(*) “Image mode-->TV”
will support automati-
cally “Overscan” with
step “2” as default.
(*) “Overscan” and
“Edge mask” can’t
work at same time.
(*) “H Image shift” only
support in format “4:3”
and “Native”. If source
is 1080i/p, “H Image
shift” only support in
format “4:3”.
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