Canon WUX450 User Manual page 61

Step 4 Select an Aspect Ratio (Screen Aspect) Matching the Screen
3
Select [Screen aspect] with the [ ] / [ ] buttons, and then press the OK
button.
Remote control
4
Use the [ ] / [ ] buttons to select the desired contents.
Remote control
16:10
Select this when you use a screen with an aspect
ratio of 16:10. Also select this screen aspect when
projecting on a wall.
You can correct keystone distortion with this mode.
(P68)
16:9
Select this when you use a screen with an aspect
ratio of 16:9.
You can correct keystone distortion with this mode.
(P68)
4:3
Select this when you use a screen with an aspect
ratio of 4:3.
You can correct keystone distortion with this mode.
(P68)
Projector
Projector
61
16:10 screen
16:9 screen
4:3 screen