WB06E Lens 0.74–0.77:1 for 4 Christie Models: 4K860-iS, DWU960-iS, DWU960-iS, DWU760-iS

WB06E is a short-throw lens for the 0.65/0.66/0.67 panel group (Christie), with a 0.74–0.77:1 throw ratio and lens shift. It is compatible with 4 projector models and 1 model series. This article presents the lens specifications, installation distances, model compatibility list, and replacement considerations in one place.

1. Lens Specifications

Lens shift is the key differentiator of this lens. A shift range of 70.30% horizontally and 32% vertically allows the projector to be installed off the screen centerline. The image can be shifted back into position without using keystone correction. Keystone correction comes at a cost—each adjustment reduces the number of effective pixels and softens text edges. In professional installations, lens shift should always be used instead of keystone correction whenever possible, as this is essential for image quality.

2. Installation Distance Based on Throw Ratio

The throw ratio is the ratio of the installation distance to the image width. This lens has a zoom range of 0.74–0.77:1, meaning that each image size corresponds to a range of installation distances. The lens can focus at any position within that range.

These figures represent the clear distance from the front of the lens to the screen and do not account for ventilation and cable connection clearance behind the chassis. They are calculated for a 16:10 image format; actual values are subject to on-site measurements and the manual.

Image quality differs at the 2 ends of the zoom range: toward the short end, the image is brighter and the edges are slightly less sharp; toward the long end, the edges are sharper and the brightness is slightly lower. When the installation environment allows, the middle of the range is recommended. After installation, first find the sharpest position using the focus ring, and then fine-tune the lens shift—adjusting both variables at the same time makes precise alignment difficult.

3. Compatible Models (4 Models, Christie)

The table below is ordered from newest to oldest by model release date and includes the resolution, brightness, and zoom ratio of the factory-supplied standard lens for each model, making it easy to identify the appropriate option for a project.

The zoom ratio is the zoom factor of the model's factory-supplied standard lens (upper ÷ lower limits of its original throw ratio range), not the zoom range of the lens featured in this article.

Common Features of These Models

The factory-supplied standard lenses for these 4 models generally have throw ratios within 1.25-2.0：1. The 0.74–0.77:1 ratio of the model featured in this article effectively adjusts the focal length range, allowing different image sizes at the same projection distance—this is the direct reason for replacing the lens. Full lens shift capability is retained, so the image can still be precisely aligned after adjusting the focal length range.

4. 3 Checks Before Replacement

• Confirm the panel and resolution. This model is compatible with a 0.67-inch panel. Projection performance varies slightly among projectors with different panel sizes or resolutions. Checking the nameplate on the projector before installation is the most reliable approach.
• Check the interface and locking mechanism. Interfaces are generally compatible within the same platform generation, but the positions of the locking tabs differ between generations. If the image appears skewed or the edges are not sharp after installation, the locking mechanism usually has not engaged fully; this is generally not a lens defect.
• Account for the lens shift margin during installation. The shift range provides additional installation flexibility, but image quality at the edges declines when the lens is shifted to its limits. Actual use should be kept within 70% of the stated values.

For models not included in the list, it is safer to send us the projector nameplate and a photo of the original lens for verification. Platforms from the same generation often share the same interfaces, but ordering based only on similar model names carries unnecessary risk.