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Transitions Optical is a U.S.-based company known for manufacturing photochromic lenses, which darken on exposure to specific types of light. The company was founded in 1990. [1] In 1991, Transitions Optical became the first company to commercialize and manufacture plastic photochromic lenses. [2]
A photochromic eyeglass lens, part of the lens darkened after exposure to sunlight while the other part remained covered. A photochromic lens is an optical lens that darkens on exposure to light of sufficiently high frequency, most commonly ultraviolet (UV) radiation. In the absence of activating light, the lenses return to their clear state.
Prime lens - a photographic lens whose focal length is fixed, as opposed to a zoom lens, or that is the primary lens in a combination lens system. Zoom lenses - variable focal length lenses. Zoom lenses cover a range of focal lengths by utilising movable elements within the barrel of the lens assembly.
Kiron Corporation was a subsidiary of Kino Precision Industries, Ltd., a Japanese manufacturer of photographic lenses.Kiron was based in Carson, California, operating in the 1980s primarily as the United States distributor of Kiron lenses, which were offered in a variety of mounts compatible with many popular 135 film manual focus single-lens reflex camera systems.
8mm T3.1 Cine UMC FISH-EYE II Cine Lens [351] 8mm T3.8 VDSLR UMC Fish-eye CS II Cine Lens [352] 10mm T3.1 VDSLR ED AS NCS CS II Cine Lens [353] 12mm T2.2 Cine NCS CS Cine Lens [354] 16mm T2.2 VDSLR ED AS UMC CS II Cine Lens [355] 21mm T1.5 ED AS UMC CS Cine Lens [356] 35mm T1.3 AS UMC CS Cine Lens [357] 50mm T1.3 AS UMC CS Cine Lens [358] Photo ...
Every helpful hint and clue for Wednesday's Strands game from the New York Times.
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