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Pentax DA 10-17mm Lens
The smc Pentax-DA 10-17mm f/3.5-4.5 ED (IF) Fish-Eye lens is a fisheye zoom lens for the Pentax K-mount. It offers an up to 180 degree view, and allows quick shift focus (Pentax's term for giving the photographer the ability to manually focus the lens even when the camera is in autofocus mode without damaging the lens or camera). History and design A patent for the lens design was filed on 30 August 2005, and granted in 2008. The design is credited to Takayuki Ito and Jun Hirakawa. Pentax announced the lens on November 30, 2005, with availability to commence in January 2006. It was designed in conjunction with Tokina is a Japanese manufacturer of photographic lenses and CCTV security equipment. Lens designations * FX - Full frame * DX - cropped digital * AF - Auto-Focus * AT-X Pro - professional line (constant aperture zooms or primes) * AT-X - consumer lin ..., who would later market a self-branded version in Nikon AF-D and Canon EF mounts starting in October 2006. The 10–1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pentax
is a brand name used primarily by the Japanese multinational imaging and electronics company Ricoh for DSLR cameras, lenses, sport optics (including binoculars and rifle scopes), and CCTV optics. The Pentax brand is also used by Hoya Corporation for medical products & services, TI Asahi for surveying instruments, and Seiko Optical Products for certain optical lenses. Corporate history Early history The company was founded as Asahi Kogaku Goshi Kaisha in November 1919 by Kumao Kajiwara, at a shop in the Toshima suburb of Tokyo, and began producing spectacle lenses (which it still manufactures). In 1938 it changed its name to , and by this time it was also manufacturing camera/cine lenses. In the lead-up to World War II, Asahi Optical devoted much of its time to fulfilling military contracts for optical instruments. At the end of the war, Asahi Optical was disbanded by the occupying powers, being allowed to re-form in 1948. The company resumed its pre-war activities, manufacturi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pentax K-mount
The Pentax K-mount, sometimes referred to as the "PK-mount", is a bayonet lens mount standard for mounting interchangeable photographic lenses to 35 mm single-lens reflex (SLR) cameras. It was created by Pentax in 1975, and has since been used by all Pentax 35 mm and digital SLRs and also the MILC Pentax K-01. A number of other manufacturers have also produced many K-mount lenses and K-mount cameras. Mounts The Pentax K-mount has undergone a number of evolutions over the years as new functionality has been added. In general, the term K-mount may refer to the original K-mount, or to all its variations. Originally designed by Zeiss for an alliance with Pentax, it was intended to be a common lens mount for a proposed series of cameras and lenses. However, the plan failed to work out and the two firms parted company amicably, but Pentax retained the lens mount and at least one Zeiss lens design for its own use. K-mount The original K-mount is a simple bayonet con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jun Hirakawa
Mr. Jun Hirakawa is a Japanese lens designer best known for creating the Pentax Pentax FA 43mm Limited lens, FA 43mm Limited and Pentax FA 77mm Limited lens, FA 77mm Limited lenses during his time at Pentax. Hirakawa said at the time that he regretted his "early retirement" from Pentax in 2010, around the time that Hoya Corporation, Hoya acquired the company, and was subsequently hired by Tamron. List of credited lens designs Hirakawa is credited with designing: * Pentax DA 10-17mm lens, DA 10-17mm f/3.5-4.5 Fisheye (co-developed with Takayuki Ito) * Pentax DA 14mm lens, DA 14mm f/2.8 * Pentax DA 40mm lens, DA 40mm f/2.8 Limited (based on the smc PENTAX-M 1:2.8 40mm) * DA 50-200 f/4-5.6 * Pentax DA 55-300mm lens, DA 55-300 f/4-5.8 * Pentax DA* 55mm lens, DA* 55mm f/1.4 * Pentax F 17-28mm lens, F 17-28mm f/3.5-4.5 Fisheye * F 35-80mm f/4-5.6 * F* 600mm f/4 * FA 28-105mm f/4-5.6 * Pentax FA 28mm lens, FA 28mm f/2.8 AL * FA 28mm f/2.8 SOFT * Pentax FA 35mm lens, FA 35mm f/2 * Pentax ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tokina
is a Japanese manufacturer of photographic lenses and CCTV security equipment. Lens designations * FX - Full frame * DX - cropped digital * AF - Auto-Focus * AT-X Pro - professional line (constant aperture zooms or primes) * AT-X - consumer line * IF - Internal Focus System * FE - Floating Element System * NH - No Hood (10-17mm fisheye without built-in hood) Optical design: * AS - Aspherical Optics * F&R - Advanced Aspherical Optics * SD - Super Low Dispersion * HLD - High-Refraction and Low Dispersion * MC - Multi-Coating Lenses Zoom * AT-X 107 DX AF fisheye 10-17mm 3.5~4.5 (available with and without the built-in hood. No hood version can be used on full-frame. The lens is also sold under Pentax brand.) * AT-X 116 PRO DX AF 11–16mm 2.8 * AT-X PRO SD 11–20mm 2.8 (IF) DX * AT-X 124 PRO DX AF 12–24mm 4 ( The lens is also sold under Pentax brand) * AT-X 124 PRO DX II SD IF AF 12–24mm 4 * AT-X PRO DX AF 12-28mm 4 * AT-X PRO FX AF 16-28mm 2.8 * AT-X 165 PRO DX AF 16–5 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pentax F 17–28mm Lens
The smc Pentax-F 17–28mm Fish-eye 3.5–4.5 is the first fisheye zoom lens, manufactured by Pentax for single-lens reflex cameras (SLRs) with a K lens mount. At its widest setting of 17mm, it affords a 180° diagonal angle of view images for all K-mount full-frame SLR cameras; at 28mm, the diagonal angle of view is reduced to 90° on the diagonal. Typical fisheye barrel distortion is evident at all focal lengths. A successor model, the Pentax DA 10-17mm lens, was introduced with the same view angles and closer focusing capability for APS-C cameras in 2006. History and design The lens was designed by Jun Hirakawa and a patent was applied for the design in 1994, granted in 1998. Longtime photography writer Herbert Keppler Herbert "Burt" Keppler (April 21, 1925 – January 4, 2008) was an American photographer, journalist, author and consultant. His career spanned 57 years, including 37 at ''Modern Photography'' and two decades at ''Popular Photography''. He wr ... was a n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
El Castillo, Chichen Itza
El templo, known as the Temple of Kukulcán (or also just as Kukulcán), is a Mesoamerican step-pyramid that dominates the center of the Chichen Itza archaeological site in the Mexican state of Yucatán. The temple building is more formally designated by archaeologists as Chichen Itza Structure 5B18. Built by the pre-Columbian Maya civilization sometime between the 8th and 12th centuries AD, the building served as a temple to the deity Kukulcán, the Yucatec Maya Feathered Serpent deity closely related to Quetzalcoatl, a deity known to the Aztecs and other central Mexican cultures of the Postclassic period. It has a substructure that likely was constructed several centuries earlier for the same purpose. The temple consists of a series of square terraces with stairways up each of the four sides to the temple on top. Sculptures of plumed serpents run down the sides of the northern balustrade. Around the spring and autumn equinoxes, the late afternoon sun strikes off the northw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pentax K-mount Lenses
The Pentax K-mount, sometimes referred to as the "PK-mount", is a Bayonet mount, bayonet lens mount standard for mounting interchangeable photographic lenses to 135 film, 35 mm single-lens reflex (SLR) cameras. It was created by Pentax in 1975, and has since been used by all Pentax 135 film, 35 mm and digital Digital single-lens reflex camera, SLRs and also the Mirrorless interchangeable-lens camera, MILC Pentax K-01. A number of other manufacturers have also produced many K-mount lenses and K-mount cameras. Mounts The Pentax K-mount has undergone a number of evolutions over the years as new functionality has been added. In general, the term K-mount may refer to the original K-mount, or to all its variations. Originally designed by Carl Zeiss AG, Zeiss for an alliance with Pentax, it was intended to be a common lens mount for a proposed series of cameras and lenses. However, the plan failed to work out and the two firms parted company amicably, but Pentax retained th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
