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Canon celebrates an unusual anniversary

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In a day when all progressive mankind celebrates the 102nd anniversary of the great October socialist revolution, Canon has told us about his interesting anniversary. It turns out that this year marks the 50th anniversary of the release of the world’s first consumer interchangeable lens, which uses synthetic fluorite.

That in combination with optical glass fluorite, the mineral form of calcium fluoride (CaF2), can almost perfectly correct the chromatic aberration, it has long been known. However, naturally occurring fluorite crystals are too small to be used in the lenses of photographic lenses.

Canon отмечает необычный юбилей

Approximately in 1950 was introduced the synthesis of fluorite with natural crystals of fluorite as raw materials, paving the way for its use as optical material. For growing crystals required vacuum environment and a temperature above 1000°C, which created problems on the way to mass production, but they were all solved by experts Canon, so in the production in March 1967 was obtained the first crystals of fluorite, synthesized in an electric furnace, and in February 1968 had a serial production of synthetic crystals of fluorite. In parallel with the development of new technologies to Polish the material, it does not give available at the time of the traditional polishing technology. Finally, in may 1969 was released as the first lens for Canon cameras with interchangeable lenses, which were applied synthetic fluorite. It was a model FL-F300mm f/5.6.

Canon отмечает необычный юбилей

In December of 1974 for technology commercialization mass production of crystals of fluorite, developed by Canon, the company was founded Optron (now Canon Optron). She has perfected the technology and developed many other optical crystal materials.

Today Canon has released 28 models of EF lenses that use fluorite lenses, and 11 of them are still available. Synthetic fluorspar is used not only in interchangeable lenses for cameras and other optical products, including cameras and telescopes.

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Photography

There are some camera specifications Canon EOS RS

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As you know, this year is expected to release Canon EOS camera RS, preliminary information about which appeared in September last year. Source has published some specifications of the camera. He argues that the resolution of the camera will be 40-45 MP and 80 MP, as initially reported.

Появились некоторые технические характеристики камеры Canon EOS RS

The camera will get the image stabilization system. Its effectiveness is evaluated in five steps of exposure, as in the case of using a stabilized lens the total efficiency reaches seven or eight steps.

The camera will allow continuous shooting at a speed of 14 K/s 20 K/s (according to other sources — 12 fps and 20 fps). In video mode, it will support 8K resolution with frame rate 30 f/s and save in RAW format, 4K resolution with a frame rate of 120 fps and 60 fps.

The controls will be the new scroll wheel on the back panel and switch the mode Liveview/Movie, like SLR cameras Canon EOS. The camera will get the battery that looks similar to the LP-E6 but with larger capacity.

The announcement of the Canon EOS RS is expected in February, before the exhibition CP+.

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Photography

Nikon introduces discounts on 28 models of Nikkor lenses

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Nikon has introduced a new discount of 28 models of Nikkor lenses mount F. List of lenses that are the subject of the action is already on B&H. the New prices will soon be visible on the websites of Adorama and Amazon.

Nikon вводит скидки на 28 моделей объективов Nikkor
Nikon вводит скидки на 28 моделей объективов Nikkor
Nikon вводит скидки на 28 моделей объективов Nikkor
Nikon вводит скидки на 28 моделей объективов Nikkor
Nikon вводит скидки на 28 моделей объективов Nikkor
Nikon вводит скидки на 28 моделей объективов Nikkor

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Photography

In March is expected to rise in selling Viltrox lenses 23mm f/1.4, 33mm f/1.4 and 56mm f/1.4

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According to the message source, in March of this year sales should appear Viltrox autofocus lenses 23mm f/1.4, 33mm f/1.4 and 56mm f/1.4, is designed for mirrorless cameras. For the first time about intention of the manufacturer to produce these models became known in August last year, and in September there was more information about them. According to new figures, sales will begin on March 21.

В марте ожидается появление в продаже объективов Viltrox 23mm f/1.4, 33mm f/1.4 и 56mm f/1.4

Recall that an optical model diagram Viltrox 23mm f/1.4 consists of 11 elements in 10 groups, and optical design models Viltrox 33mm f/1.4 and 56mm Viltrox f/1.4 — 10 elements in 9 groups. In all cases, the diaphragm 9 is formed by the petals and can vary in the range f/1,4-f/16. Viltrox lenses 23mm f/1.4, 33mm f/1.4 and 56mm f/1.4 weigh 250 g, 270 g and 290 g, respectively. All they are designed for filters with a diameter of 52 mm. is the same and the price is $ 250.

Lenses are available in mounts for Sony E, Canon M and Fujifilm X.

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