Aspect Ratio - T+A VSP 1250 R User Manual

Aspect ratio

Today's picture sources deliver pictures with widely
varying formats and aspect ratios. In many cases the
format delivered by the source device does not match the
geometry of your video monitor. The video signals
coming from the source must therefore be adjusted to
suit the geometry of your monitor (4:3 or 16:9). Different
conversion factors are required for this according to the
source signal and the monitor. The table printed below is
intended to help you establish the most suitable
conversion factor (no conversion, -33V, +33V, etc.) for
each combination of source signal (see "Video signal
format" columns) and monitor.
Video signal format
For LCD or 4:3 (1,33:1)
plasma screens
4:3 format no conversion
16:9 format -33 H
4:3 projectors 4:3 (1,33:1)
with 4:3 screen no conversion
with 16:9 screen -33 H&V
16:9 projectors 4:3 (1,33:1)
with 4:3 screen -33 H
with 16:9 screen -33 H
– choosing the correct matching factor
The illustrations in the table show the picture formats
produced by each combination.
16:9 (1,85:1) 16:9 (1,85:1)
letterbox anomorphic
no conversion -33 V
+33 V no conversion
16:9 (1,85:1) 16:9 (1,85:1)
letterbox anomorphic
no conversion -33 V
no conversion -33 V
16:9 (1,85:1) 16:9 (1,85:1)
letterbox anomorphic
+33 V no conversion
+33 V no conversion
67
21:9 (2,35:1) 21:9 (2,35:1)
letterbox anomorphic
no conversion -33 V
+33 V no conversion
21:9 (2,35:1) 21:9 (2,35:1)
letterbox anomorphic
no conversion -33 V
no conversion -33 V
21:9 (2,35:1) 21:9 (2,35:1)
letterbox anomorphic
+33 V no conversion
+33 V no conversion