Adjusting the image
Adjust the projector image. Christie recommends warming the lens before completing these
procedures as focus may change as the lens warms.
Correcting vignetting
An image that is brighter at the center than it is at the sides needs vignetting correction.
If your image suffers from vignetting, the lens has reached the end of its offset travel range.
If your installation does not allow the image to be centered with the center of the screen,
move the entire projector in the direction of lens travel.
Correcting keystone effect
Learn how to adjust the image to correct keystone effect.
Keystone effect occurs when you project an image onto the screen at an angle. As a result, the image
appears distorted and resembles a trapezoid.
When making the adjustments, set the light source to minimum power.
Horizontal keystone
Vertical keystone
Projector skewed horizontally to the screen
Projector tilted vertically to the screen
1. If the image suffers from slight keystone effect, it can be corrected with electronic cropping.
2. If the keystone effect is severe, you can unevenly adjust the feet to compensate for projector
tilt.
Cinema 4K-RGB User Guide–CP4315-RGB, CP4320-RGB, CP4325-RGB, CP4330-RGB
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020-102712-06 Rev. 1 (03-2021)
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2021 Christie Digital Systems USA, Inc. All rights reserved.
