LG 47LD660H Owner's Manual page 59

Set by program
Selects the proper picture proportion to match
the source's image.
(4:3 4:3)
Set By Program
(16:9 16:9)
Set By Program
4:3
Choose 4:3 when you want to view a picture
with an original 4:3 aspect ratio.
16:9
Adjust the picture horizontally, in a linear pro-
portion to fill the entire screen.
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