The Canon KH20x6.4 KRSD Portable 1/2-inch HDTV ENG 20x Lens is a long focal length remote control portable 1/2-inch HDTV lens. This lens is intended for users utilizing an HD acquisition system, and to support a diversity of broadcast, professional, business and industrial remote control applications. This lens is designed to work in conjunction with the new 1/2-inch image format HDTV cameras that are used for a number of special applications.
The KH20x6.4 KRSD has a high sensitivity of F1.4 over a 20x zoom range (falling modestly to F2.0 at full telephoto). This high sensitivity offers great flexibility in shooting in low light situations. It has a wide 57.1 degree horizontal field of view and weighs a mere 2.8 lbs. The KH20x6.4 KRSD offers a balanced MTF profile over the entire image plane at an F4.0 aperture setting. Relative light distribution was optimized for F2.8 and above, and this uniformity of brightness across the image plane combines with the high contrast and strong picture sharpness to produce crisp clear HD pictures
