Canon RS-IL02LZ Long Zoom Lens: Compatible with 21 Projector Models

The Canon original lens RS-IL02LZ Long Zoom is a factory-supplied optical accessory for Canon engineering projectors. It is a long-throw (Long Throw) lens with a throw ratio of 2.20-3.75:1. The factory compatibility list covers 21 models. Before installation, simply verify the projector model and panel size; there is no need to resort to adapter rings. The value of an original lens lies not in the extra rows of specifications, but in the fact that it is calibrated at the factory to the optical path and mount of that projector series: image circle, edge illumination, and focus travel are all design values, so there is no need to use keystone correction to compensate for image quality.

I. Lens Specifications

These specifications are subject to the manufacturer's original specifications. For mechanical dimensions, flange distance, and mount type not shown in the specifications table, please contact us with the exact projector model. Ordering solely on the basis of 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 original lens is a zoom lens (2.20-3.75:1). A given image size corresponds to a range of distances, and the lens can focus at any position within that range.

The distances above are clear distances from the front of the lens to the screen and do not account for clearance at the rear of the projector for ventilation and cable connections. These figures are calculated based on a 16:10 image; actual distances should be confirmed through on-site measurements and the manufacturer's manual.

Image quality differs at the two ends of the zoom range: the image is brighter and the edges are slightly softer at the near end, while the edges are sharper and brightness is slightly lower at the far end. When the venue allows, the middle of the range is recommended. After installation, first turn the focus ring to the sharpest position, then fine-tune the lens shift.

III. Compatible Models (21 Models)

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

To determine whether a model outside the list can be used, send us a photo of the projector nameplate and the existing lens for verification. Platforms of the same generation often share the same mount, but it is not worth placing an order based only on a similar model number.

Throw Ratios for Different Model Series

The nominal throw ratio varies by model series when the same RS-IL02LZ Long Zoom is installed. Select the value according to the series of the projector in use.

IV. Three Checks Before Replacement

• Confirm the projector panel and resolution. Original lenses are designed for a specific panel size. When the panel specifications differ, the image circle cannot cover the full image area, resulting in vignetting or edge illumination loss after installation.
• Calculate the installation distance first. This lens has a nominal throw ratio of 2.20-3.75:1. Use the table in Section II to calculate the distance for your venue. A fixed lens leaves no room for adjustment, while even a zoom lens should have 10–20 cm of clearance at both ends of the range.
• Verify the mount and locking mechanism. Original lenses are calibrated to the mount of the relevant projector series. You must hear the locking mechanism engage fully after installation. A skewed image or soft edges usually indicate that the lock is not fully engaged, rather than a problem with the lens itself.

If you are unsure, take one photo of the projector nameplate and one of the existing lens nameplate, then send them to us. Verification against the physical items is the safest approach.