The Christie ILS Lens 2.0-2.8:1 SX+ / 1.8-2.6:1 HD is a versatile zoom lens designed for Christie's 3-Chip DLP projectors, specifically the M and J Series. It features an Intelligent Lens System (ILS) for automatic recognition and calibration.

This zoom lens is a key component in Christie's suite of professional projector accessories, offering significant flexibility in installation distance for large venue, stage, and broadcast applications. The main feature is the variable throw ratio, which adapts based on the connected projector's native resolution. When paired with a 1080 HD or WUXGA model, it provides a throw ratio of 1.8-2.6:1. If used with an SXGA+ resolution projector, the throw ratio changes to 2.0-2.8:1, allowing users to achieve different image sizes from various throw distances.

A notable engineering aspect is the integrated Intelligent Lens System (ILS), which ensures precise and repeatable performance. This system utilizes stepper-motor-based encoding for the zoom, focus, and offset positions, preventing the motor drift often found with traditional DC-encoded motors. This makes the lens ideal for applications requiring consistent alignment or pre-set position recall, such as blending multiple projected images. The optical performance is maintained across a range of screen sizes, offering crisp and clear images for both data and high-definition video content.