WB011 Projector Lens 0.78–0.81:1 for Sharp XG-EC500UA/EC550XA/EC600UA/EC650XA

WB011 is a short-throw lens for 0.64-inch panels (Sharp), with a throw ratio of 0.78–0.81:1 and lens shift. It is compatible with 4 models across 1 model series. This article consolidates the lens specifications, installation distances, model compatibility list, and replacement considerations.

I. Lens Specifications

Lens shift is the key differentiator of this lens. A shift range of 76.00% horizontally and 47.70% vertically means the projector can be installed off the screen centerline and the image can be repositioned using lens shift without relying on keystone correction. Keystone correction comes at a cost—each adjustment reduces the effective pixel count and softens text edges. In professional installations, lens shift should always be used instead of keystone correction whenever possible, as this is the baseline for image quality.

II. Calculating Installation Distance from the Throw Ratio

The throw ratio is the ratio of the installation distance to the image width. This is a zoom lens (0.78–0.81:1), so each image size corresponds to a range of installation distances, and the lens can be focused anywhere within that range.

The distances above are clear distances from the front of the lens to the screen and do not include clearance behind the projector for ventilation and cable connections. Calculated for a 16:10 image; actual values should be verified through on-site measurements and the manual.

Image quality varies between 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 reduced brightness near the long end. Where installation conditions allow, the middle of the range is recommended. After installation, find the sharpest position using the focus ring before fine-tuning the lens shift—adjusting both variables at the same time makes precise alignment difficult.

III. Compatible Models (4 Models, Sharp)

The following table is ordered from newest to oldest by model production date and includes the resolution, brightness, and factory-standard lens zoom ratio for each model, enabling quick identification according to project requirements.

The zoom ratio is the zoom factor of the model’s factory-standard lens (upper throw-ratio limit ÷ lower limit), not the zoom range of the lens featured in this article.

Common Features of These Models

The factory-standard lenses for all 4 models generally have throw ratios concentrated around 1.4-2.28：1. The 0.78–0.81:1 model featured here effectively changes the focal-length range, allowing different image sizes from the same projection distance—this is the direct reason for replacing the lens. It also retains full lens-shift capability, allowing the image to be realigned after the zoom range has been changed.

IV. Three Checks Before Replacement

• Confirm the panel size and resolution. This model is compatible with 0.64-inch panels. Projectors with different panel sizes or resolutions may vary in projection performance, so the safest approach is to verify the specifications against the nameplate before installation.
• Check the interface and locking mechanism. Interfaces are generally highly compatible across platforms of the same generation, but the positions of the locking tabs may differ between generations. If the image is skewed or the edges appear soft after installation, the lock is usually not fully engaged; this is rarely an issue with the lens itself.
• Include lens-shift margin in the installation plan. The shift range provides installation flexibility, but edge image quality declines when the shift is pushed to its limit. Actual shift should generally be kept within 70% of the rated values.

For compatibility with a model not listed, the safest option is to send us the projector nameplate and a photo of the original lens for verification. Platforms of the same generation often share interfaces, but the risks of placing an order based solely on a similar model name are not worth taking.