LG L192WS-SN User Manual page 16

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* 4:3 : Depending on the input video signal ratio,
it is automatically changed to an optimized screen
ratio. (The 1280X1024 input signal is changed
to 5:4 ratio and 1024X768 to 4:3.)
1280x1024
1152x864
1024x768
800x600
640x480
720x480
A15
Description
4:3
5 : 4
4 : 3
4 : 3
4 : 3
4 : 3
3 : 2