Christie 108-328104-xx Zoom Telephoto Lens: CP2210 Compatibility

Christie Original Lens 108-328104-xx Zoom is an OEM optical accessory for Christie engineering projectors. It is a long-throw lens with a throw ratio of 1.90-3.00:1. The official compatibility list covers 1 model. Before installation, simply verify the projector model and panel size—no adapter rings are needed. The value of an OEM lens lies not in the additional rows of specifications, but in its factory calibration to the optical path and mount of that projector series. Once installed, the image circle, edge illumination, and focus travel all match the design values, eliminating the need to use keystone correction to compensate for image quality.

I. Lens Specifications

These specifications are subject to the manufacturer's official specifications. For mechanical dimensions, flange distance, and mount type not shown in the specifications, please contact us with your projector model. Ordering directly based on a similar model carries the risk that the lens will not fit.

II. Converting Throw Ratio to Installation Distance

The throw ratio is the ratio of the installation distance to the image width. This OEM lens is a zoom lens (1.90-3.00:1), so a given image size corresponds to a range of installation distances, and the lens can be focused anywhere within that range.

These figures represent the clear distance from the front of the lens to the screen and do not account for ventilation and cable connection clearance at the rear of the projector. They are calculated for a 16:10 image; actual values should be verified on site and according to the manufacturer's manual.

Image quality differs at the two ends of the zoom range. Near the short-throw end, the image is brighter and the edges are slightly softer; near the long-throw end, the edges are sharper and the brightness is slightly lower. When the venue allows it, the middle of the range is recommended. After installation, first find the sharpest image position on the focus ring, then fine-tune the lens shift.

III. Compatible Models (1 Model)

The following list is taken from the official compatibility list. Brightness and resolution are populated from the model database; entries for which data cannot be obtained are shown as “—”, with no values estimated.

To determine whether a model outside the list can be used, send us photos of the projector nameplate and the existing lens. Projectors from the same generation often share the same mount, but the risk of ordering based solely on a similar model is not worth taking.

Throw Ratio by Projector Series

The nominal throw ratio varies by projector series when the same 108-328104-xx Zoom is installed. Select the value based on the series of the actual projector.

IV. Three Checks Before Replacement

• Confirm the projector chip and resolution. The OEM lens is designed for a specific panel size. If the panel specifications differ, the image circle cannot cover the panel, resulting in vignetting or edge light loss after installation.
• Calculate the installation distance first. This lens has a rated throw ratio of 1.90-3.00:1. Use the table in Section 2 to calculate the distance based on your venue dimensions. A fixed-focal-length lens provides no zoom margin, and even a zoom lens requires 10–20 cm of clearance at both ends of the range.
• Verify the mount and locking mechanism. The OEM lens is calibrated for the mount used on projectors in this series. After installation, you must hear the lens lock into position. A skewed image or soft edges are usually caused by incomplete locking rather than a problem with the lens itself.

If you are unsure, take one photo each of the projector nameplate and the current lens nameplate and send them to us. Verification against the physical items is the most reliable approach.