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Prepares Viltrox autofocus fast lenses with focal lengths of 23 mm, 33 mm and 56 mm for mirrorless cameras

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According to the source, Viltrox soon announce three lenses for mirrorless cameras. These high-aperture lenses with a fixed focal length will be equipped with actuators for automatic focusing. Expected release of varieties with mounts Sony E, Canon M and Fujifilm X.

Viltrox готовит автофокусные светосильные объективы с фокусными расстояниями 23 мм, 33 мм и 56 мм для беззеркальных камер

Optical model diagram Viltrox 23mm f/1.4 consists of 11 elements in 10 groups. Diaphragm, adjustable range f/1,4-f/16, formed of 9 petals. The lens weighs 250 g. it is possible to install filters with a diameter of 52 mm.

Viltrox готовит автофокусные светосильные объективы с фокусными расстояниями 23 мм, 33 мм и 56 мм для беззеркальных камер

Viltrox model 33mm f/1.4 is also designed for filters with a diameter of 52 mm. In the optical design of this lens has 10 elements in 9 groups. Aperture of 9 petals can vary in the range f/1,4-f/16. The mass of the lens is 270 g.

Viltrox готовит автофокусные светосильные объективы с фокусными расстояниями 23 мм, 33 мм и 56 мм для беззеркальных камер

The heaviest of the three lens Viltrox 56mm f/1.4 with a mass of 290 g. Its optical scheme also includes 10 elements in 9 groups. Aperture of 9 petals can take the values f/1,4-f/16. Boarding the filter diameter is 52 mm.

Viltrox готовит автофокусные светосильные объективы с фокусными расстояниями 23 мм, 33 мм и 56 мм для беззеркальных камер

Information on pricing and release date yet.

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Photography

Leica opens Silicon valley center for “computational imaging”

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CEO of Leica Harsh Mathias (Matthias Harsch) announced that Leica will create a “competence centre in computational imaging in California’s Silicon valley”.

Leica откроет в Кремниевой долине центр «вычислительной визуализации»

“After the transition from analog to digital photography in early 2000, 19 years later, we are faced with the second digital revolution in the industry of cameras and optics” — leads the source words Harsha.

According to the CEO of the company, is the industry legend, “computer visualization”, that is, the image acquisition indirectly by using algorithms that significantly affects the picture and in the future this influence will increase. Thus, creating a new research center, Leica provides a place in that future.

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Became known, the Ricoh will celebrate the 100th anniversary of Pentax

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Some time ago, Ricoh has confirmed that this fall will release a new camera. It’s a little weird, as I was able to time the release to date and thus provide additional interest to the new product. The fact that on the 27th of November marks the 100th anniversary of the marches Pentax is now Ricoh.

Стало известно, чем Ricoh отметит 100-летие Pentax

However, no release of a commemorative products will not do. Though fans of the brand “new” is unlikely to please. According to the source, Ricoh will celebrate the 100th anniversary of Pentax release plugs into the hot Shoe O-HC171 with appropriate engraving.

Стало известно, чем Ricoh отметит 100-летие Pentax

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Camera Sony a7R IV also is “eating the stars”

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The source, before carrying out such a test of the camera Sony a7R III, reviewed the work of the camera Sony a7R IV terms of use of this device for astrophotometry. He came to the conclusion that the Sony a7R IV also is “eating the stars”. The reason would be the algorithm of noise reduction at high shutter speeds, which does not distinguish the stars from the noise.

Камера Sony a7R IV тоже «ест звезды»

The tests showed that the algorithm is activated when the shutter speed is equal to or exceeds the 3.2 s. This is clearly seen on charts: the first corresponds to a short exposure, which is long.

Камера Sony a7R IV тоже «ест звезды»
Камера Sony a7R IV тоже «ест звезды»

The horizontal axis is spatial frequency, related to the sampling frequency of the camera and on the vertical axis — the values of noise. In the absence of noise reduction graph tends to a horizontal line. Treatment is especially pronounced in the blue channel (the final chart). Presumably, this is due to the use of part of the pixels for phase focusing.

Камера Sony a7R IV тоже «ест звезды»

The source said that in the Sony a7R III noise reduction began to manifest itself upon exposure of 4 seconds.

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