The Canon HD Video Lens 6x XL 3.4-20.4mm L is made for the High Definition ENG, commercial, documentary and feature videographer who demands uncompromising optical quality. The 3.4 to 20.4mm wide-angle zoom lens provides users with an extensive range of focal lengths from 24.5 to 147mm (in 35mm photographic terms). Designed for Canon's XL lens mount system, it adds even more versatility and artistic range to Canon's XL HD camcorder, the XL H1.Canon reserves the "L-Series" designation for its highest quality photographic lenses. As an L-Series lens, the Canon HD Video Lens 6x XL 3.4-20.4mm L has excellent color reproduction and delivers edge-to-edge sharpness. With high-refraction glass and the integration of Canon's newly developed UA (Ultra High Refractive Index Aspherical) lens design, the lens achieves high resolution and increased zoom magnification in a compact size. It features Canon's multi-coating to reduce ghosting and flare for a clear, crisp image. It also ensures minimal distortion that makes it the ideal lens for wide-screen TV.The XL mount system supports the HDV standard, ensuring communication compatibility and full HDV functionality with the XL H1. This includes HDV functions such as HD auto-focusing, still image auto-focusing, still image stabilization, and distance information.It's just another demonstration of how Canon camcorders and lenses are providing professional videographers with the tools they need.