Christie 108-323109-xx Zoom Long-Throw Lens for CP2210

Christie Original Lens 108-323109-xx Zoom is a factory optical accessory for Christie engineering projectors, featuring a long throw (Long Throw) ratio of 3.90-6.52:1. The factory compatibility list covers 1 projector model. Before installation, simply verify the projector model and panel size without resorting to adapter rings. The value of an original lens lies not in a few additional figures in the specifications table, but in its factory calibration to the optical path and mount of the relevant projector series: once installed, the image circle, edge illumination, and focus travel are all at their designed values, with no need to compensate for image quality through keystone correction.

1. Lens Specifications

Brand	Christie (Christie)
Lens Model	108-323109-xx Zoom
Throw Ratio	3.90-6.52:1
Product Type	Long Throw
Compatible Models	1 projector
Warranty	12 months; after-sales service is available for damage not caused by the user, subject to the date on the shipping documents

The above specifications are subject to the original factory specifications. For mechanical dimensions, flange distance, and mount type not listed in the specifications table, please verify them with us using the projector model. Placing an order solely because the model appears similar carries the risk that the lens will not fit.

2. Converting Throw Ratio to Installation Distance

The throw ratio is the ratio of the installation distance to the image width. This original lens is a zoom lens (3.90-6.52:1), so a given image size corresponds to a range of installation distances. It can focus at any distance within that range during installation.

Image Size	Image Width	Required Installation Distance
100 inches	2.15 m	approx. 8.38 – 14.02 m
120 inches	2.58 m	approx. 10.06 – 16.82 m
150 inches	3.22 m	approx. 12.58 – 21.03 m
200 inches	4.30 m	approx. 16.77 – 28.04 m

The distances above are clear distances from the front surface of the lens to the screen and do not include space behind the projector for cooling and cabling. For a 16:10 image, the actual distances should be confirmed through on-site measurements and the factory manual.

Image quality varies at the two ends of the zoom range: near the close end, the image is brighter and the edges are slightly softer; near the far end, the edges are sharper and the image is slightly dimmer. Where the venue allows, we recommend positioning the lens in the middle of the range. After installation, first find the sharpest image using the focus ring, and then fine-tune the lens shift.

3. Compatible Models (1 Projector)

The following table is taken from the factory compatibility list. Brightness and resolution are populated from the model database; where unavailable, they are shown as “—” and are not estimated.

Model	Brightness	Resolution
CP2210	12000 lumens	2048x1080

To verify whether a model not included in the list can be used, send us a photo of the projector nameplate and the existing lens. Platforms from the same generation often share the same mount, but ordering based only on a similar model name carries an unnecessary risk.

Throw Ratio by Projector Series

The nominal throw ratio varies by series when the same 108-323109-xx Zoom lens is used. Select the value based on the series of the actual projector.

Projector Series	Throw Ratio
—	3.90-6.52:1

4. Three Checks Before Replacement

• Confirm the projector imaging chip and resolution. The original lens is designed for a specific panel size. If the panel specifications differ, the image circle cannot cover the full image, resulting in vignetting or light loss at the edges after installation.
• Calculate the installation distance first. This lens has a nominal throw ratio of 3.90-6.52:1. Use the table in Section 2 with the dimensions of your venue. A fixed-focus lens offers no adjustment margin, and a zoom lens should still allow 10–20 cm of margin at both ends.
• Verify the mount and locking mechanism. The original lens is calibrated to the mount of the relevant projector series. You must hear it lock securely into place after installation. 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 of the projector nameplate and one of the nameplate on the existing lens, then send them to us. Verification against the actual products is the most reliable approach.