Adjusting the image
Learn how to adjust image geometry so it displays correctly.
Calibrating the Intelligent Lens System
On C 4K-RGB projectors, the Intelligent Lens System (ILS) is activated by default.
Use the Auto Calibrate feature of the ILS to find and compensate for motor backlash, and to determine
the movement range for the currently installed lens.
1. In the left navigation menu, select Image Settings > ILS File Setup.
2. From the ILS File list, select an available ILS file.
3. Select Auto Calibrate.
4. Select Continue.
The system performs the lens calibration.
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.
Adjusting tilt and leveling the projector
To ensure optimum performance, install the projector so it is centered and parallel with the screen.
To compensate for tilt or offset, you can adjust the projector feet and the lens mount position.
This product must be installed in a landscape orientation, with all four feet supported on a level
surface. Do not install or operate the projector in an inverted position. If your site has any installation
requirements other than a typical theater projection booth, contact Christie for assistance.
The front-to-back tilt of the projector must not exceed 15° in a downward direction or 5° in an upward
direction. The side-to-side tilt must be 3° to -3° of level.
1. To adjust the height of the projector, loosen the lock nut on the adjustable feet on the bottom
of the projector.
C 4K-RGB Installation and Setup Guide–CP4415-RGB, CP4420-RGB
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020-103244-04 Rev. 1 (03-2021)
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