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Weight. 460 g. Filter diameter. 58 mm. Retail info. MSRP. $640 USD. The Sigma 105mm f/2.8 EX DG is a macro lens produced by Sigma Corporation. The lens has six different variates, fitting on the Sigma SA mount, Canon EF mount, Four Thirds System, Pentax K mount, Minolta A-mount, and the Nikon F-mount. [ 1][ 2]
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, [ 1 ] and has since been used by all Pentax 35 mm and digital SLRs and also the MILC Pentax K-01 .
What set these cameras apart from earlier Pentax ones was the replacement of the M42 "universal" screw-lens mount with a proprietary bayonet mount system, known as the K mount. Still the basis for Pentax lenses and cameras today, the K mount offered greater convenience and enabled the production of faster lenses such as the 50 mm f /1.2. [17]
1962: Pentax launched the world's first diagonal fish-eye lens for 35mm SLR cameras. That lens was the Takumar 18mm F11 Fish-eye. [ 1] 1965: Pentax introduced the 6x7 SLR medium format system. 1967: Pentax introduced the world's most efficient fish-eye lens with a maximum brightness of f/4. Takumar Fish-eye 17mm f/4.
2008. Retail info. MSRP. $730.00 USD USD. The Sigma 50mm f/1.4 EX DG HSM is a normal prime lens made by the Sigma Corporation . The lens is produced in Canon EF mount, Four Thirds System, Nikon F-mount, Pentax K mount, Sigma's own SA mount, and the Sony/Minolta AF Mount varieties, all have the same optical formula.
MSRP. $1100 USD USD. The Sigma 8–16mm lens is an enthusiast-level, ultra wide-angle rectilinear zoom lens made by Sigma Corporation specifically for use with APS-C small format digital SLRs. It is the first ultrawide rectilinear (non- fisheye lens) zoom lens with a minimum focal length of 8 mm, designed specifically for APS-C size image ...
Five lenses have been released for the Pentax Q. A sixth lens and an adapter were announced in September, 2012. Pentax 01 Standard Prime (2011) — 47 mm equivalent; Pentax 02 Standard Zoom (2011) — 28–80 mm equivalent; Pentax 03 Fisheye (2011) — 17.5 mm equivalent; Pentax 04 Toy Lens Wide (2011) — 35 mm equivalent
Sigma Corporation. Sigma Corporation (株式会社シグマ, Kabushiki-gaisha Shiguma) is a Japanese company, manufacturing cameras, lenses, flashes and other photographic accessories. All Sigma products are produced in the company's own Aizu factory in Bandai, Fukushima, Japan. Although Sigma produces several camera models, the company is best ...
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