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The AR-mount lenses may be divided into several types, based mostly on cosmetics. When the Autoreflex T was introduced in 1967, Konica added a lever to signal the widest aperture setting for the through-the-lens (TTL) in-body light meter; Konica also offered a free service to retrofit the earliest AR-mount lenses with the new lever.
IWC International Watch Co. AG, founded International Watch Company, better known as IWC Schaffhausen, is a Swiss luxury watch manufacturer located in Schaffhausen, Switzerland. [1] Originally founded in Switzerland by American watchmaker Florentine Ariosto Jones in 1868, the company was transferred to the Rauschenbach family in 1880 after ...
The Weaver mount was developed by William Ralph Weaver (1905 – 8 November 1975) at his telescopic sight company W.R. Weaver Co., which he founded in 1930. [3] Previous systems included the Leupold/Redfield mounts. [4] Compared to the Leupold mount, the Weaver rail is not as strong and cannot be adjusted for windage. [4]
It is similar in concept to the earlier commercial Weaver rail mount used to mount telescopic sights, but is taller and has wider slots at regular intervals along the entire length. The MIL-STD-1913 locking slot width is 0.206 in (5.23 mm). The spacing of slot centres is 0.394 in (10.01 mm) and the slot depth is 0.118 in (3.00 mm). [8]
Before and after those years, vehicles could have model-specific, nonstandard-shape headlamps, using any of a wide variety of replaceable light bulbs. Between 1940 and 1956, all U.S. cars had to have two 7-inch (178 mm) round headlamps with dual filaments, so each lamp provided both a high and a low beam light distribution.
IWC may refer to: Organisations ... Iowa Wesleyan College, a liberal arts college located in Mount Pleasant, Iowa; International Wrestling Cartel, ...
Pilot-controlled lighting (PCL), also known as aircraft radio control of aerodrome lighting (ARCAL) or pilot-activated lighting (PAL), is a system that allows aircraft pilots to control the lighting of an airport or airfield's approach lights, runway edge lights, and taxiways via radio.
The bayonet mount began to be superseded around 1980 by the Arri PL mount, which has since become an overwhelmingly predominant mount for most modern cameras, along with Panavision and their PV mount. Arri PL is a lens mount developed by Arri for use with both 16 mm and 35 mm movie cameras. The PL stands for "positive lock".