SC282 Projector Lens 1.26–1.95:1 for Winmate C-4K900 and 1 Other Model

SC282 is a medium-to-long-throw lens for the 0.65/0.66/0.67-inch panel group (Winmate), with a 1.26–1.95:1 throw ratio and lens shift. It is compatible with 1 model from 1 model series. This guide presents the lens specifications, installation distances, model compatibility list, and replacement considerations in one place.

1. Lens Specifications

The lens-shift capability is this lens's key differentiator. A shift range of 110% horizontally and 50% vertically allows the projector to be installed off the screen centerline, with the image repositioned through lens shift rather than keystone correction. Keystone correction comes at a cost—each correction step sacrifices some effective pixels and causes text edges to blur. In professional installations, lens shift should always be used instead of keystone correction whenever possible; this is the image-quality baseline.

2. Calculating Installation Distance from Throw Ratio

The throw ratio is the ratio of installation distance to image width. This is a zoom lens (1.26–1.95:1), so each image size corresponds to a range of installation distances, and the lens can focus anywhere within that range.

These figures represent the clear distance from the front surface of the lens to the screen and do not include clearance behind the chassis for ventilation and cabling. They are calculated for a 16:10 image; actual values should be verified through on-site measurement and the manual.

Image quality varies at the two zoom extremes: the image is brighter with slightly softer edges near the short-throw end, while the edges are sharper with slightly lower brightness near the long-throw end. When site conditions allow, use the middle of the range. After installation, first find the sharpest position on the focus ring, then fine-tune the lens shift—adjusting both at once makes precise alignment difficult.

3. Compatible Models (1 Model, Winmate)

The following table is ordered by model production date, from newest to oldest, and includes each model's resolution, brightness, and original lens zoom ratio for quick identification according to project requirements.

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

Common Characteristics of These Models

The original standard lens for this model typically has a throw ratio in the 1.4-2.5:1 range. The 1.26–1.95:1 model in this article effectively adjusts the focal-length range, allowing different image sizes at the same projection distance—the direct reason for replacing the lens—while retaining full lens-shift capability so the image can still be aligned after the zoom range is adjusted.

4. Three Checks Before Replacement

• Confirm the panel and resolution. This model is compatible with a 0.67-inch panel. Projectors with a different panel size or resolution will show some differences in projection performance, so the safest approach is to verify them against the nameplate on the chassis before installation.
• Check the interface and locking mechanism. Interface compatibility is generally good within the same platform generation, but locking-tab positions vary between generations. If the image appears skewed or the edges look soft after installation, the lock is usually not fully engaged rather than the lens itself being defective.
• Account for lens-shift margin during installation. The shift range provides installation flexibility, but edge image quality declines when it is pushed to its limits. Actual use should therefore be kept within 70% of the specified value.

For models not on the list, it is safer to send us a photo of the chassis nameplate and the original lens for verification—same-generation platforms often share interfaces, but the risks of ordering solely on the basis of a similar model designation are not worth taking.