Description

The KH19x6.7 KTS has an excellent sensitivity of f 1.6 over a 19x zoom range (falling modestly to f 2.1 at full telephoto). It has a generous 55-degree horizontal field of view and weighs in at a low 2.8 lbs. This lens is anticipated to be a superb workhorse that can address a wide range of remote control projects. The KH19x6.7 KTS was specifically designed for the Sony HDC-X300/X310 compact HD camera and the Sony HD XDCAM camcorders, which utilize three 1/2-inch 1440-element CCD imagers. The lens has a special feature in having an interface to the Sony-developed Auto-Focus system built into these acquisition systems. The design optimization strategies sought a balanced MTF profile over the entire image plane at an F2.0 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 excellent picture sharpness to produce vividly clear HD pictures. Contrast was extended by superb control of black reproduction – with optical and mechanical design innovations that substantially reduced flare, veiling glare, and any internal reflections. Similar attention to minimization of ghost images and other highlight-related chromatic distortions caused by strong light sources on-axis and off-axis further extend the operational contrast range of the lens.

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