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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.
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]
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 .
Asahi Pentax. Cameras using the M42 lens mount, also known as the Pentax screw mount. Asahi Pentax (1957) — also sold as the Tower 26; Asahi Pentax S (1958) — also sold as the Tower 26; Asahi Pentax K (1958) — also sold as the Tower 29; Asahi Pentax S2/H2 (1959) — also sold as the Honeywell Pentax H2/Honeywell Heiland Pentax H2
Pentax MX. The Pentax MX is a 35 mm single-lens reflex camera produced by Asahi Optical Co, later Pentax of Japan between 1976 and 1985. It was Pentax's flagship professional SLR until the introduction of the Pentax LX. Internally, the MX is essentially a smaller, lighter version of the Pentax KX, and otherwise has little in common with the ...
1981: Pentax was the first to create an TTL-autofocus camera and started the development of autofocus systems. That camera was the Pentax ME-F. [6] 1984: Pentax introduces the Pentax 645 SLR medium format system. 1991: Pentax was the first to introduce Power Zoom on bayonet mount lenses for SLR cameras. That lenses included the FA* 250-600mm f5 ...
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