JVC GL-MS4015SZG Zoom Standard-Throw Projector Lens Guide for DLA-SH7NLG and DLA-VS4010NLG

JVC Genuine Lens GL-MS4015SZG Zoom is an original optical accessory for JVC professional projectors. It is a standard-throw (Standard Throw) lens with a throw ratio of 1.50-1.85:1. The official compatibility list covers two models. Before installation, simply verify the projector model and panel size—no need to improvise with an adapter ring. The value of an original lens lies not in the additional figures in the specification sheet, but in the fact that it is factory-calibrated to the optical path and lens mount of that projector series. Once installed, the image circle, edge illumination, and focus travel all meet the design specifications, with no need to use keystone correction to compensate for image quality.

I. Lens Specifications

Brand	JVC (JVC)
Lens Model	GL-MS4015SZG Zoom
Throw Ratio	1.50-1.85:1
Product Type	Standard Throw (Standard Throw)
Compatible Models	2 models
Warranty	12 months; damage not caused by the user is eligible for after-sales service, based on the date shown on the shipping documents

The above specifications are subject to the official product specifications. Mechanical dimensions, flange distance, and lens mount type are not listed in the specification table. Please verify these details with us using the projector model, as ordering solely based on a similar model carries the risk of the lens not fitting.

II. Calculating Installation Distance from Throw Ratio

The throw ratio is the ratio of the installation distance to the image width. This original lens has a zoom range of 1.50-1.85:1, so the same image size corresponds to a range of installation distances, and the lens can focus at any point within that range.

Image Size	Image Width	Required Installation Distance
100 inches	2.15 m	Approx. 3.22 – 3.98 m
120 inches	2.58 m	Approx. 3.87 – 4.77 m
150 inches	3.22 m	Approx. 4.84 – 5.97 m
200 inches	4.30 m	Approx. 6.45 – 7.96 m

The above values represent the clear distance from the front of the lens to the screen and do not include clearance for rear cooling or cable connections. They are calculated for a 16:10 image; in practice, confirm the actual distance on site and refer to the manufacturer's manual.

Image quality varies at the two ends of the zoom range. Toward the short end, the image is brighter and the edges are slightly softer; toward the long end, the edges are sharper and the image is slightly dimmer. Where venue conditions allow, the middle of the range is recommended. After installation, first find the sharpest image using the focus ring, then fine-tune the lens shift.

III. Compatible Models (2 Models)

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

Model	Brightness	Resolution
JVC DLA-SH7NLG	—	—
JVC DLA-VS4010NLG	—	—

To determine whether a model outside the list can be used, please send us a photo of the projector nameplate and the existing lens for verification. Projector platforms from the same generation often share the same lens mount, but ordering solely based on a similar model introduces unnecessary risk.

Throw Ratio by Model Series

Even when the same GL-MS4015SZG Zoom lens is installed, the nominal throw ratio varies by series. Use the value corresponding to the actual projector series when selecting a lens.

Model Series	Throw Ratio
—	1.50-1.85:1

IV. Three Checks Before Replacement

• Confirm the projector imaging device and resolution.Original lenses are designed for specific panel sizes. If the panel specifications differ, the image circle cannot cover the full image, resulting in vignetting or light loss at the edges after installation.
• Calculate the installation distance first.This lens has a nominal throw ratio of 1.50-1.85:1. Use the table in Section II and apply it to the dimensions of your installation space. A fixed-focus lens offers no adjustment margin, while a zoom lens still requires 10–20 cm of margin at both ends.
• Verify the lens mount and locking mechanism.The original lens is calibrated to the lens mount of that projector series. After installation, you must hear the locking mechanism engage fully. Image skew and soft edges are usually caused by incomplete locking rather than a problem with the lens itself.

If you are unsure, send us one photo of the projector nameplate and one photo of the existing lens nameplate. Verification against the physical equipment is the most reliable approach.