Runco RS-900 Owner's Operating Manual page 70

Operation
GeoCorrection
V. Keystone
H. Keystone
Pincushion
GeoCorrection: Projector placement and other factors can cause geometric distortion in
the projected image. To correct this, select GeoCorrection from the Installation menu. This
sub-menu provides the following options:
0
• V. Keystone/H. Keystone: To correct distortion resulting from the angle of projection,
select V. Keystone or H. Keystone from the GeoCorrection menu and use the
0
button to make the image rectangular. See Figure 4-6.
0
-
Negative values
compress left side.
-
Negative values
compress bottom.
Figure 4-6. Keystone Correction
Runco recommends that the keystone feature not be used unless
absolutely necessary, as it may cause artifacts in the image.
Horizontal Keystone Correction
Projector
Vertical Keystone Correction
56
+
Projected Image
Positive values
compress right side.
+
Positive values
compress top.
Runco RS-900 Owner's Operating Manual
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