Minolta Lenses

Est. 1928 · Osaka, Japan · 37 lenses

Minolta was founded in 1928 in Osaka by Kazuo Tashima as Nichi-Doku Shashinki Shōten ('Japan-Germany Camera Company'), with German engineers Billy Neumann and Willy Heilemann assisting in early production. The company was renamed Molta Goshi-Kaisha in 1931 and Chiyoda Kogaku Seiko K.K. in 1937; the trade name 'Minolta' (an acronym for 'Mechanism, Instruments, Optics and Lenses by Tashima') was applied to its cameras from 1933 onward and became the corporate name in 1962.

Minolta's photographic-lens identity centered on the Rokkor brand, named after Mount Rokkō overlooking Kobe. The SR-2 (1958) introduced the SR bayonet that — through the MC and MD revisions — supported nearly thirty years of Minolta SLR production. The company built a reputation for innovative metering and exposure automation: the SR-T 101 (1966) used CLC dual-cell averaging metering, and the XD-7 / XD-11 (1977) was the world's first multi-mode (program, aperture-priority, shutter-priority, manual) 35 mm SLR. Minolta cameras flew on the Mercury and Gemini space programs, and a Hi-Matic 7 was carried aboard John Glenn's Mercury-Atlas 6 mission in 1962.

Minolta's most consequential product was the Maxxum 7000 / α-7000 / Dynax 7000 (1985) — the first 35 mm SLR with a fully integrated body autofocus system, motor-driven film transport, and an electronically coupled lens mount (the A-mount). Commercial success was enormous, but Honeywell sued Minolta for infringing patents on phase-detection autofocus and a 1991 verdict awarded Honeywell roughly $127 million in damages — at the time the largest patent settlement in U.S. history. Minolta absorbed the loss and continued with the Dynax / Maxxum 9 (1998) and Maxxum 7 (2000) bodies and an expanding line of AF Apo, Apo Tele, G-series, and Limited lenses.

Konica and Minolta merged in 2003 to form Konica Minolta Holdings, Inc., and the combined company exited the camera business in March 2006. Sony — already collaborating with Konica Minolta on a DSLR project — acquired the DSLR and lens IP, which became the basis of the Sony α DSLR and SLT cameras. The A-mount lens roadmap continued under Sony as Sony A-mount with G-branded native lenses and Carl Zeiss ZA-branded co-developed optics, extending the original Minolta optical heritage well into the 2010s.

Notable designs: MC Rokkor-PG 58mm f/1.2, MD Rokkor 50mm f/1.4, AF 50mm f/1.4, AF 85mm f/1.4 G, AF 200mm f/2.8 APO G, AF 28-70mm f/2.8 G

MINOLTA AF 100mm f/2— 7 ELEMENTS / 6 GROUPS, 100mm f/2, 1.0m MFDMINOLTA AF 100mm f/2.8 Macro— 8 elements / 8 groups, f = 100.0 mm design, F/2.83 design; marketed f/2.8MINOLTA AF 135mm f/2.8 [T4.5] STF— 8 ELEMENTS / 6 GROUPS, 135mm f/2.8 [T4.5] STF, MODELED EFL 135.001536 mmMINOLTA AF 20mm f/2.8— 10 ELEMENTS / 9 GROUPS, 20mm, f/2.8MINOLTA AF 28-70mm f/2.8 G— 16 ELEMENTS / 11 GROUPS, 4-GROUP N-P-N-P ZOOM, 28.7 / 50.0 / 68.3mm DESIGN STATESMINOLTA AF 28-75mm f/2.8 (D)— 28-75mm f/2.8, 16 elements / 14 groups, 4 hybrid aspherical surfacesMINOLTA AF 28mm f/2— 9 elements / 9 groups, f = 28.0 mm, F2.0MINOLTA AF 35-105mm f/3.5-4.5 New (v2)— 35-105 mm full-frame A-mount zoom, Patent f = 36.0-60.0-102.0 mm, 13 optical media / 10 groups (12 production elements)MINOLTA AF 35mm f/1.4— 10 ELEMENTS / 8 GROUPS, 35mm MARKETED / 34.983 mm DESIGN, f/1.4 MARKETED / F/1.45 DESIGNMINOLTA AF 35mm f/2— 7 ELEMENTS / 6 GROUPS, 35mm MARKETING / 35.0002mm MODELED, f/2MINOLTA AF 400mm f/4.5 APO G— 8-ELEMENT / 6-GROUP PATENT MODEL, 390 mm PATENT HEADER / 391.43 mm COMPUTED EFL, F/4.59 DESIGNMINOLTA AF 70-200mm f/2.8 APO G (D) SSM— Patent Example 1: 19 elements / 15 air-spaced optical clusters, Production class: 70-200mm f/2.8 A-mount, Patent f = 71.8 / 105.0 / 195.0 mm; Fno = 2.88MINOLTA AF 80-200mm f/2.8 APO— 16 ELEMENTS / 13 GROUPS, DESIGN 82-195mm, F/2.88 DESIGNMINOLTA AF APO TELE 200mm f/2.8— 200mm f/2.8, 8 elements / 7 groups, 2ω = 12° in patent; 12°30′ manufacturer angle of viewMINOLTA AF APO TELE 300mm f/2.8— Patent Example 8: f = 295.0 mm, FN = 2.9, Marketed as 300mm f/2.8, 10 prescription elements / 8 groupsMINOLTA AF REFLEX 500mm f/8— 500 mm f/8 fixed, f = 495.97 mm patent EFL, f/7.07 area-equivalent annular design apertureMINOLTA AF ZOOM 35-70mm f/4— 6 components / 6 air-spaced groups, 7 modeled optical media including hybrid resin layer, 36.0-68.2 mm patent design rangeMINOLTA AUTO TELE ROKKOR-PF 100mm f/2— 6 ELEMENTS / 5 GROUPS, f = 100 mm, f/2MINOLTA MC FISH-EYE ROKKOR-OK 16mm f/2.8— MINOLTA: 11 ELEMENTS / 8 GROUPS INCLUDING BUILT-IN FILTER, ACTIVE MODEL: 10 ELEMENTS / 7 GROUPS, 16mm f/2.8MINOLTA MC W.ROKKOR-SG 28mm f/3.5— 7 elements / 7 groups, 28mm, f/3.5MINOLTA MD 135mm f/2.8— 5 ELEMENTS / 5 GROUPS, 135mm, f/2.8MINOLTA MD 28mm f/2.8 (5 elements / 5 groups)— 5 ELEMENTS / 5 GROUPS, 28.0119 mm MODEL EFL, f/2.8MINOLTA MD 28mm f/2.8 (7 elements / 7 groups)— 7 ELEMENTS / 7 GROUPS, f = 27.9955 mm (DESIGN), F/2.8MINOLTA MD 50mm f/2— 6 ELEMENTS / 5 GROUPS, 50 mm f/2, PATENT 2ω = 46°MINOLTA MD APO TELE 600mm f/6.3— 8 POWERED ELEMENTS / 7 GROUPS, f ≈ 599.639 mm, F/6.3 CALIBRATEDMINOLTA MD FISHEYE ROKKOR-X 7.5mm f/4— 12 ELEMENTS / 8 GROUPS, DESIGN f = 7.50 mm, DESIGN F/4.00MINOLTA MD ROKKOR 45mm f/2— 6 ELEMENTS / 5 GROUPS, f ≈ 45.0 mm, F/2.0MINOLTA MD ROKKOR 50mm f/1.4— 7 ELEMENTS / 6 GROUPS, f ≈ 50.0 mm, F/1.4MINOLTA MD TELE ROKKOR 135mm f/2.8— 4 ELEMENTS / 4 GROUPS, Computed f = 134.969 mm, F/2.8MINOLTA MD ZOOM 24-35mm f/3.5— 10 ELEMENTS / 10 GROUPS, f ≈ 24.6–34.1 mm, F/3.5MINOLTA MD ZOOM 24-50mm f/4— 13 ELEMENTS / 11 GROUPS, DESIGN f = 24.51-48.59 mm, F/4 CONSTANT (INFERRED IRIS SCHEDULE)MINOLTA MD ZOOM 28-85mm f/3.5-4.5— 13 ELEMENTS / 10 GROUPS, f ≈ 28.8–82.5 mm, F/3.6–4.63MINOLTA MD ZOOM 35-135mm f/3.5-4.5— 14 ELEMENTS / 12 GROUPS, 35-135mm f/3.5-4.5, 4-GROUP ZOOMMINOLTA MD ZOOM 50-135mm f/3.5— 12 ELEMENTS / 10 GROUPS, PATENT 51.5-131.5mm, PATENT F/3.6MINOLTA MD ZOOM 75-150mm f/4— 12 ELEMENTS / 8 GROUPS, f = 77–146 mm (design), F/4.1 (design)MINOLTA RF 250mm f/5.6— 5 PHYSICAL ELEMENTS / 4 GROUPS, 2 SECOND-SURFACE MIRRORS, EXAMPLE 2 DESIGN f/4.5; MARKETED f/5.6MINOLTA VARISOFT ROKKOR 85mm f/2.8— 6 ELEMENTS / 5 GROUPS, f ≈ 85.0 mm (production) · 100.0 mm (patent), F/2.8