Understanding the Control Panel
32
LBOX/PBOX - Letterbox / Pillarbox
If the input aspect ratio is 16:9 and it is passed on to a 4:3 display, as in a down conversion, the LBOX/
PBOX aspect ratio will produce a Letterbox output, where the entire image appears vertically centered
in the 4:3 display with bars at the top and bottom of the image.
If the input aspect ratio is 4:3 and the output aspect ratio is 16:9, as in an up conversion, the LBOX/
PBOX aspect ratio will produce a Pillarbox output, where the image appears horizontally centered in
the 16:9 display with bars on the left and right sides of the image.
16:9 Ratio Image
(correct geometry)
4:3 Ratio Image
(shot with an
anamorphic lens)
4:3 Ratio Image 4:3 Ratio Image
(incorrect geometry)
Upconversion
Downconversion
16:9 Ratio Image
4:3 Ratio Display
(incorrect geometry)
16:9 Ratio Image
4:3 Ratio Display
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