Christie 108-329105-xx Zoom Long-Throw Lens Guide: CP2210 Compatibility

Christie OEM Lens 108-329105-xx Zoom is an OEM optical accessory for Christie engineering projectors, featuring a long throw (Long Throw) with a throw ratio of 1.50-2.20:1. The OEM compatibility list covers 1 model; before installation, verify the projector model and panel size—no adapter rings are needed. The value of an OEM lens lies not in the extra figures in its specifications, but in the fact that it is factory-calibrated to the optical path and mount of that projector series: once installed, the image circle, edge illumination, and focus travel are all at their designed values, with no need to rely on keystone correction to compensate for image quality.

1. Lens Specifications

The above specifications are subject to the original manufacturer's specifications. For mechanical dimensions, flange distance, and mount type not shown in the specifications table, please check with us using the projector model; ordering based solely on a similar model carries the risk that the lens will not fit.

2. Converting Throw Ratio into Installation Distance

The throw ratio is the ratio of the installation distance to the image width. This OEM lens is a zoom lens (1.50-2.20:1), so a given image size corresponds to a range of installation distances; during installation, it can focus at any distance within that range.

The above distances are clear distances from the front of the lens to the screen and do not include clearance for rear cooling and cable connections. For a 16:10 image, actual values should be confirmed through on-site measurement and in accordance with the manufacturer's manual.

Image quality differs at the two ends of the zoom range: toward the near end, the image is brighter and the edges are slightly softer; toward the far end, the edges are sharper and brightness decreases slightly. Where the venue allows, the middle of the range is recommended. After installation, first find the sharpest position on the focus ring, and then fine-tune the shift.

3. Compatible Models (1 model)

The table below is taken from the OEM compatibility list. Brightness and resolution are populated from the model database; “—” indicates unavailable data, and no values are inferred.

For compatibility with an unlisted model, please send us photos of the projector nameplate and the current lens for verification. Same-generation platforms often use the same mount, but the risk of ordering based on a superficially similar model is not worth taking.

Throw Ratios by Model Series

The rated throw ratio varies by series when the same 108-329105-xx Zoom lens is installed. Select the value based on the series of the actual projector.

4. 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 full image, resulting in vignetting or edge light loss after installation.
• Calculate the installation distance first. This lens has a rated throw ratio of 1.50-2.20:1; use the table in Section 2 to calculate the distance for your venue. A fixed-focus lens has no adjustment range, and even a zoom lens should allow an extra 10–20 cm at both ends.
• Verify the mount and locking mechanism. The OEM lens is calibrated to the mount used on that projector series, and you must hear it lock fully into place after installation. A skewed image or soft edges usually means that the lens is not fully locked, rather than that the lens itself is faulty.

If you are uncertain, send us one photo each of the projector nameplate and the current lens nameplate for verification against the actual products.