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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]
Progressive addition lenses avoid the discontinuities (image-jumps) sometimes found with bifocal and trifocal lenses Some people find them more cosmetically attractive. Because bifocals and related designs are associated with old age, proponents have suggested the lack of visible lines makes a progressive lens appear similar to the single ...
"Full-frame E-mount" series for 35mm full-frame image format. G "Gold" series, Sony's line-up of high-grade lenses. GM "Gold Master" series, Sony's line-up of ultra high-grade lenses. LE "Light Edition", lenses designed to be particularly light. OSS "Optical SteadyShot", lenses with optical image stabilization. PZ
The Varilux Ipseo New Edition is the first lens designed and tested using a virtual simulator. The lens is personalized to the wearer's visual behaviour, using 10 customization criteria. To do so, it uses the Vision Print System, which measures a personal diagnosis of eye and head movement. [25]
Typical zoom lenses cover a 3.5× range, for example 24–90 mm (standard zoom) or 60–200 mm (telephoto zoom). "Super-zoom" lenses with a range of 10× or even 14× are becoming more common, although the image quality does typically suffer a bit compared with the more traditional zooms.
While the "(D)" designation is used on the box and in the documentation, the lenses just feature a "D" instead. Requires 8 lens contacts; lenses with only 5 contacts cannot support this feature. DT "Digital Technology", lenses for cameras with APS-C (or Super-35mm) size sensors, only. DT lenses will not fully illuminate the sensor/film area of ...