Tessar lens

Tessar lens

[′te‚sär ‚lenz]
(optics)
An anastigmatic lens made up of a negative lens at the aperture stop with two positive lenses, one in front and the other in back; the last positive lens is a cemented doublet.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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It uses a wide angle Zeiss Tessar lens, and can shoot in 4K.
Both the FDRA[degrees]X1000VR and HDRA[degrees] AS200VR models feature a huge 170A field of view, with an ultraA[degrees]wide angle ZEISS Tessar lens giving a panoramic perspective as the action unfolds.
In addition, innovative 3-Way Shake-Cancelling adds electronic roll stability for even smoother video capture.An ultra-wide angle Carl Zeiss Tessar lens captures all the action in a 170-degree wide field of view with pin-sharp clarity whether on the desert slopes or skydiving.No other mountable camera combines such advanced image stabilisation and optics with a rugged exterior and convenient Wi-Fi connectivity.
It offers a 3.2" touchscreen and a pop-up display revealing a full QWERTY keyboard, as well as a 5 megapixel camera with Carl Zeiss Tessar lens and dual LED flash and 8GB of on-board memory that is expandable up to 24GB with the addition of a 16GB microSD card.
This includes a wide-angle Carl Zeiss Tessar lens for panoramic pictures, shorter latencies and variable aperture for super sharp photos in challenging bright and low light conditions.