BenQ SP831 - Manual (Page 38)

38 Operation
Correcting pincushion distortion and barrel distortion
Your projected picture may suffer from pincushion or barrel distortions due to the curved
projection surface.
• Pincushion distortion
The horizontal and vertical lines that do not go through the center of the picture bend
inwards toward the center of the picture. The distortion is most noticeable at the edges
of the picture.
• Barrel distortion
The horizontal and vertical lines that do not go through the center of the picture bend
outwards toward the center of the picture. The distortion is most noticeable at the edges
of the picture.
To correct the image's shape, you can perform the following steps.
1.
Press MENU and then press / until the
Display menu is highlighted.
2. Press to highlight Keystone and press ENTER.
The Keystone page displays.
3. Press to highlight Pincushion Correction and
press /
repeatedly to adjust the image until you
are satisfied with the shape.
Keystone
2D Keystone
Pincushion Correction
EXIT Back
0
Press in the
Display >
Keystone >
Pincushion
Correction
menu.
Pincushion/Barrel correction
Press / . Press / .
Two parallel sides
No parallel sides
1. Press /
.
2. Press
/ .
Press in the
Display >
Keystone >
Pincushion
Correction
menu.