Sony VPLL-Z7008 Standard-Throw Lens Guide for VPL-GTZ280 and VPL-GTZ270

Sony Genuine Lens VPLL-Z7008 is an original optical accessory for Sony engineering projectors. It falls into the standard-throw category (Standard Throw), has a throw ratio of 0.80-1.02:1, and covers the panel sizes (in inches) of the GTZ series. The manufacturer's compatibility list covers 2 models. Before installation, simply verify the projector model and panel size; there is no need to make do with adapter rings. The value of a genuine lens lies not in the extra few lines it adds to a specification sheet, but in the fact that it is calibrated at the factory to the optical path and mount of projectors in that series: once fitted, the image circle, edge illumination, and focus travel all meet their design specifications, so there is no need to use trapezoidal correction to compensate for image quality.

1. Lens Specifications

The above specifications are subject to the manufacturer's specifications. For mechanical dimensions, flange distance, and mount type not shown in the specification table, please check with us using the projector model. Placing an order directly on the basis of a similar model carries the risk that the lens will not fit.

2. Calculating Installation Distance from the Throw Ratio

The throw ratio is the ratio of installation distance to image width. This genuine zoom lens (0.80-1.02:1) means that the same image size corresponds to a range of distances, and focus can be achieved at any installation distance within that range.

These figures represent the clear distance from the front of the lens to the screen and do not include space behind the projector for ventilation and cable connections. They are calculated for a 16:10 aspect ratio; actual distances are subject to 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 near the close end, while the edges are sharper and brightness is slightly lower near the far end. Where the venue allows, use the middle of the range. After installation, turn the focus ring to find the sharpest image, then fine-tune the lens shift.

3. Compatible Projector Models (2 models)

The following table is taken from the manufacturer's compatibility list. Brightness and resolution are filled in from the model database; unavailable values are shown as — and are not estimated.

To check whether a model not on the list is compatible, send us photos of the projector nameplate and the existing lens for verification. Platforms from the same generation often share the same mount, but the risk of ordering based on a similar model is not worth taking.

Throw Ratio by Projector Model Series

The rated throw ratio varies when the same VPLL-Z7008 is installed on the series listed below, so select the value based on the series of the actual projector.

4. Three Checks Before Replacement

• Panel size must match. The VPLL-Z7008 is designed for the panel sizes (in inches) of the GTZ series. On projectors with a different panel size or resolution, the image circle and edge illumination may be compromised even if the lens fits the mount.
• Calculate the installation distance first. The rated throw ratio of this lens is 0.80-1.02:1. Apply the table in Section 2 to your venue's dimensions; a fixed-focal-length lens has no adjustment range, while a zoom lens should also leave 10–20 cm at both ends.
• Check the mount and locking mechanism. The genuine lens is calibrated to the mount used on projectors in this series. After installation, you must hear it click into the locked position; a skewed image or soft edges usually mean that it is not fully locked, rather than indicating 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 units is the most reliable approach.