Christie 163-152109-XX Zoom Long-Throw Lens: M 4K25 RGB Compatibility

Christie Genuine Lens 163-152109-XX Zoom is an original optical accessory for Christie engineering projectors. It is designed for long-throw (Long Throw) projection, with a throw ratio of 1.48-2.03:1. The manufacturer’s compatibility list covers 1 model, so simply verify the projector model and panel size before installation—there is no need to make do with adapter rings. The value of a genuine lens lies not in the extra figures in the specification sheet, but in the fact that it is calibrated at the factory to the optical path and mount of that projector series. Once installed, the image circle, edge illumination, and focusing travel are all at their design values, with no need to use keystone correction to compensate for image quality.

I. Lens Specifications

Brand	Christie (Christie)
Lens Model	163-152109-XX Zoom
Throw Ratio	1.48-2.03:1
Product Type	Long Throw
Compatible Models	1 model
Warranty	12 months; non-accidental damage is eligible for after-sales service, based on the date on the sales invoice

The above specifications are subject to the original manufacturer’s specifications. Mechanical dimensions, flange distance, and mount type are not listed in the specification table. Please verify them with us using the projector model; placing an order solely because the model appears similar risks an incompatible fit.

II. Converting Throw Ratio into Installation Distance

The throw ratio is the ratio of installation distance to image width. This genuine zoom lens (1.48-2.03:1) supports a range of installation distances for any given image size, and it can focus at any point within that range.

Image Size	Image Width	Required Installation Distance
100 inches	2.15 m	Approx. 3.18 – 4.36 m
120 inches	2.58 m	Approx. 3.82 – 5.24 m
150 inches	3.22 m	Approx. 4.77 – 6.55 m
200 inches	4.30 m	Approx. 6.36 – 8.73 m

These distances are measured from the front surface of the lens to the screen and do not include clearance behind the projector for ventilation and cable connections. The figures are calculated for a 16:10 image; actual installation should follow on-site measurements and 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 brightness decreases slightly. When site conditions allow, we recommend positioning the lens near the middle of the range. After installation, find the sharpest setting on the focus ring, and then fine-tune the lens shift.

III. Compatible Models (1 model)

The table below is taken from the manufacturer’s compatibility list. Brightness and resolution are populated from the projector model database; where the data is unavailable, “—” is shown rather than making assumptions.

Model	Brightness	Resolution
M 4K25 RGB	—	—

To check whether the lens can be used with a model not on the list, send us photos of the projector nameplate and the existing lens for verification. Platforms from the same generation often share the same mount, but ordering based only on a similar model is not worth the risk of an incompatible fit.

Throw Ratio by Projector Series

The nominal throw ratio of the same 163-152109-XX Zoom lens varies by projector series, so use the value for the series of the actual projector when selecting.

Model Series	Throw Ratio
—	1.48-2.03:1

IV. Three Checks Before Replacement

• Confirm the projector chip and resolution. Original lenses are designed for a specific panel size. With different panel specifications, the image circle cannot cover the full frame, resulting in vignetting or light loss at the edges after installation.
• Calculate the installation distance first. This lens has a nominal throw ratio of 1.48-2.03:1. Use the table in Section II to match it to your venue’s dimensions. A prime lens offers no margin, while a zoom lens should also allow 10–20 cm of clearance at both ends.
• Verify the mount and locking mechanism. The original 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 are usually caused by incomplete locking, not by the lens itself.

If you are uncertain, take one photo of the projector nameplate and one of the existing lens nameplate and send them to us. Verification against the actual hardware is the safest option.