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Operation
Runco LS-10i Installation/Operation Manual 47
PRE
L
IMINAR
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Aspect Ratio: To change the aspect ratio (size and shape) of the projected image, press
or to highlight Aspect Ratio. Use the or buttons to select the appropriate
aspect ratio for your screen size, installed lens configuration and the type of program
material being viewed, then press ENTER; refer to Table 4-2.
Note that some aspect ratios are unavailable and/or not useful with certain types of
source material. The optimal setting depends on a number of factors, such as:
• The aspect ratio of the source material, as broadcast or encoded on the playback
medium.
• The “display type” (16:9 or 4:3) and output resolution settings at the source
component. Most modern DVD/BD players and set-top boxes have such controls.
• Viewer preference (original aspect ratio with “black bars,” or a full-screen presentation
with some distortion or cropping).
Table 4-2. Aspect Ratio Settings
Aspect
Ratio
Setting
Description
Aspect
Ratio of
Source
Signal
Geometry of Projected Image
With Standard Lens
(1.78:1 Screen)
With Anamorphic Lens (2.35:1 Screen)
16:9
16:9 linearly scales the
source active image
horizontally and vertically
to fill a 16:9 screen.
16:9
4:3
Letterbox
With a 16:9 source
image, Letterbox mode
crops the top and
bottom portion of the
image and vertically
stretches the remaining
portion to fill a 16:9
image area.
It scales (zooms in on) a
4:3 image linearly (by the
same amount on all
sides) to fill a 16:9
display.
16:9
4:3