Panasonic ET-ELW20 Standard-Throw Lens for 14 Projector Models

Panasonic Genuine Lens ET-ELW20 is an original optical accessory for Panasonic professional projectors. It is a standard-throw lens (Standard Throw) with a throw ratio of 1.21-1.66:1, designed for 0.76" 3LCD panels. The manufacturer's compatibility list covers 14 models. Before installation, simply verify the projector model and panel size—no adapter ring is needed. The value of a genuine lens lies not in the additional figures in its specifications, but in the fact that it is calibrated at the factory to the optical path and lens mount of the corresponding projector series. The image circle, edge illumination, and focus travel are therefore delivered at their design values, without relying on keystone correction to compensate for image quality.

I. Lens Specifications

The above specifications are subject to the manufacturer's official specifications. For mechanical dimensions, flange distance, and mount type not listed in the specifications table, please provide your projector model so we can verify them. Ordering solely because the model numbers are similar carries the risk that the lens will not fit.

II. Calculating Installation Distance from the Throw Ratio

The throw ratio is the ratio of the installation distance to the image width. This genuine lens is a zoom lens (1.21-1.66:1), so each image size corresponds to a range of installation distances. It can focus at any distance within that range.

These figures represent the clear distance from the front of the lens to the projection screen and do not include space for rear housing ventilation or cable connections. They are calculated for a 16:10 image aspect ratio; actual distances should be verified on site and according to the manufacturer's manual.

Image quality varies at the two ends of the zoom range: the image is brighter with slightly softer edges near the short end, while the edges are sharper with slightly lower brightness near the long end. Where the venue layout allows, use the middle of the range. After installation, adjust the focus ring to the sharpest position, then fine-tune the lens shift.

III. Compatible Models (14 Models)

The following table is taken from the manufacturer's compatibility list. Brightness and resolution are populated from the model database; where the data is unavailable, it is marked "—" rather than estimated.

To verify whether a model not on this list is compatible, send us photos of the projector nameplate and current lens. Projector platforms of the same generation often share the same lens mount, but ordering solely because the model numbers look similar carries unnecessary risk.

Throw Ratio by Projector Series

The rated throw ratio varies by series when the same ET-ELW20 is used. Select the value corresponding to the series of the actual projector.

IV. Three Checks Before Replacement

• Confirm that the panel size matches.ET-ELW20 is designed for 0.76" 3LCD panels. On projectors with a different panel size or resolution, the image circle and edge illumination may be compromised even if the lens mount accepts the lens.
• Calculate the installation distance first.This lens has a rated throw ratio of 1.21-1.66:1. Use the table in Section II and adapt the figures to your installation site. A fixed-focus lens provides no adjustment margin, while a zoom lens still requires 10–20 cm of allowance at both ends.
• Verify the lens mount and locking mechanism.The genuine lens is calibrated to the lens mount of projectors in the corresponding series, and you must hear it lock 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 current lens nameplate, then send them to us. Verification against the actual hardware is the most reliable approach.