Rokkor was a brand name used for all Chiyoda Kōgaku Seikō and later Minolta lenses between 1940 and 1980, [1] including a few which were marketed and sold by other companies like Leica. The name was derived from the name of Rokkō (六甲山), a 932 metre (3058') high mountain, which could be seen from the company's glass-making and optics factory at Mukogawa near Osaka, Japan. [1] The company's founder Kazuo Tashima wanted the name to symbolize the high quality in optics. [1]
The first lens to carry the Rokkor designation was a 200mm f/4.5 lens that came with the hand-holdable aerial camera Chiyoda SK-100 in 1940. [1] After the Rokkor name was dropped and no longer engraved in new lenses after 1980/1981, [1] the Rokkor name resurfaced two times. As was revealed not before 2006, the Rokkor name was still used internally for prototypes of a never released SR-mount Minolta MD Apo Tele Rokkor 300mm f/2.8 manual-focus lens in the early 1980s, [2] a lens design, which later saw life as the A-mount Minolta AF Apo Tele 300mm f/2.8 G in 1985, a non-Rokkor auto-focus lens. The Rokkor name was also resurrected for a short time between 1996 and 1998 for the Minolta G-Rokkor 28mm f/3.5 lens. As the only officially released auto-focus Rokkor ever, this lens was incorporated into the Minolta TC-1 135 film compact camera. [1] To celebrate Minolta's 70th anniversary in 1998, the same optics were also used in the Minolta TC-1 Limited as well as in a Leica thread-mount version of the lens in a limited production run of 2000 units for the Japanese market only.
When the brand was still used by Minolta, there were also printed Minolta magazines named "ROKKOR" in Austria and Japan. [1]
The brand was so well respected among photographers that some customers asked for "Rokkor cameras" [1] and questioned the origin of the lenses when the first Minolta lenses without the Rokkor designation hit the market between 1977 and 1980. [1] Many continued to call at least the manual-focus Minolta SR-mount lenses "Rokkors" long after the name was dropped. Even decades later, when Sony took over the A-mount auto-focus SLR system from Konica Minolta in 2006, for which no Rokkor lenses were ever produced, there were (unsuccessful) petitions to reintroduce the old Rokkor brand. There are now even totally unrelated pseudo-brands named Rokunar and Rokinon trying to capitalize on the power of Minolta's brand.
Elements Groups [4] | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| C | D | E | F | G | H | I | J | K | L | |||
| 3 | (trēs) | T | -TC (100, 135) | -TD (45, 300) | — | |||||||
| 4 | (quattuor) | Q | — | -QD (135, 300) | -QE (35, 100, 200) | -QF (50, 200, 250) | — | -QH (21) | — | |||
| 5 | (penta) | P | — | -PE (200) | -PF (50, 53, 55, 58, 85, 100, 135) | -PG (18, 50, 58, 135) | — | -PI (21) | — | |||
| 6 | (hexa) | H | — | -HF (300) | -HG (35) | -HH (35) | — | |||||
| 7 | (septem) | S | — | -SG (28) | — | -SI (28) | — | |||||
| 8 | (octō) | O | — | -OK (16) | — | |||||||
| 9 | (novem) | N | — | -NL (21) | ||||||||
For some while in the 1960s and 1970s SR-mount SLR lenses manufactured for the North American market were engraved with Rokkor-X rather than just Rokkor (as was used in the rest of the world) in order to improve trackability and dry out the gray market. Although some buyers from the USA and Europe each associated either the Rokkor-X or the non-X-ed Rokkor designation with a higher quality, respectively, both types of lenses were built to exactly the same specifications and quality standards in the factory. They differed only in their name plate. [3] In the 1980s and 1990s, Minolta used a similar scheme for A-mount lenses, which were labelled Maxxum AF in the USA and Canada (where the A-mount camera bodies were labelled Maxxum ) and just AF elsewhere (including in those regions otherwise using the Dynax and α labels for the cameras).
Until around 1975, the Rokkor (or Rokkor-X) name was followed by a two-letter combination indicating the optical formula of the lens. The first letter stood for the number of groups, while the second letter indicated the number of elements; for example, a Rokkor-QF was a six element lens with four groups. [1] [3]
Super Rokkor, Boen Rokkor, Fish-Eye Rokkor, VFC Rokkor, Shift CA Rokkor, Varisoft Rokkor, Bellows Micro Rokkor, Micro Rokkor, Bellows Macro Rokkor, Macro Rokkor, Tele Rokkor, RF Rokkor, Zoom Rokkor, Rokkor-TC, Rokkor-TD, TV Zoom Rokkor.
| FL (mm) | Aperture | Name | SR [lower-alpha 1] | MC [lower-alpha 2] | MD [lower-alpha 3] | Construction | Focus | Notes | |
|---|---|---|---|---|---|---|---|---|---|
| Ele | Grp | ||||||||
| Fisheye lenses | |||||||||
| 7.5 | f/4–22 | Fish-eye Rokkor |  |  | | 12 | 8 | 0.5 m (1 ft 8 in) | circular fisheye lens |
| 16 | f/2.8–16 | Fish-eye Rokkor-OK | | | | 11 | 8 | 0.3 m (1 ft 0 in) | "full-frame" (diagonal) fisheye lens |
| 18 | f/9.5–22 | UV Rokkor-PG | | | | 7 | 5 | fixed | "full-frame" (diagonal) fisheye lens |
| Ultra wide angle lenses | |||||||||
| 17 | f/4–16 | W Rokkor | | | | 12 | 9 | 0.25 m (9.8 in) | Retrofocus design |
| 20 | f/2.8–22 | W Rokkor | | | | 10 | 9 | 0.25 m (9.8 in) | Retrofocus design with floating element |
| 21 | f/2.8–16 | W Rokkor-NL | | | | 12 | 9 | 0.25 m (9.8 in) | Retrofocus design |
| 21 | f/4–16 | W Rokkor-QH | | | | 8 | 4 | 0.9 m (2 ft 11 in) | symmetric lens, requires mirror lock-up |
| 21 | f/4.5–16 | W Rokkor-PI | | | | 9 | 5 | 0.9 m (2 ft 11 in) | symmetric lens, requires mirror lock-up |
| Wide angle lenses | |||||||||
| 24 | f/2.8-16 | W Rokkor | | | | 9 | 7 | 0.3 m (1 ft 0 in) | Retrofocus design |
| 24 | f/2.8-16 | W Rokkor VFC | | | | 9 | 7 | 0.3 m (1 ft 0 in) | Retrofocus design |
| 28 | f/2–16 | W Rokkor | | | | 10 | 9 | 0.3 m (1 ft 0 in) | Retrofocus design |
| 28 | f/2.5–16 | W Rokkor-SI | | | | 9 | 7 | 0.5 m (1 ft 8 in) | Retrofocus design |
| 28 | f/2.8–16 | W Rokkor | | | | 7 | 7 | 0.3 m (1 ft 0 in) | Retrofocus design |
| 28 | f/3.5–16 | W Rokkor-SG | | | | 7 | 7 | 0.6 m (2 ft 0 in) | Retrofocus design |
| 28 | f/3.5–16 | W Rokkor-PE | | | | 5 | 5 | 0.3 m (1 ft 0 in) | Retrofocus design |
| 35 | f/1.8–16 | W Rokkor-HH | | | | 8 | 6 | 0.3 m (1 ft 0 in) | Retrofocus design |
| 35 | f/2.8–16 | W Rokkor-HG | | | | 7 | 6 | 0.4 m (1 ft 4 in) | Retrofocus design |
| 35 | f/2.8–16 | W Rokkor | | | | 5 | 5 | 0.3 m (1 ft 0 in) | Retrofocus design |
| 35 | f/2.8–22 | Shift CA Rokkor | | | | 9 | 7 | 0.3 m (1 ft 0 in) | Retrofocus design, includes variable field curvature control (VFC) |
| 35 | f/4–22 | W Rokkor-QE | | | | 5 | 4 | 0.4 m (1 ft 4 in) | Retrofocus design |
| Normal lenses | |||||||||
| 45 | f/2.8–16 | Rokkor-TD | | | | 4 | 3 | 0.9 m (2 ft 11 in) | |
| 50 | f/1.2–16 | Rokkor | | | | 7 | 6 | 0.45 m (1 ft 6 in) | |
| 50 | f/1.4–16 | Rokkor | | | | 7 | 5 | 0.5 m (1 ft 8 in) | |
| 50 | f/1.4–16 | Rokkor | | | | 7 | 6 | 0.45 m (1 ft 6 in) | |
| 50 | f/1.7–16 | Rokkor-PF | | | | 6 | 5 | 0.5 m (1 ft 8 in) | |
| 50 | f/1.7–16 | Rokkor | | | | 6 | 5 | 0.45 m (1 ft 6 in) | |
| 50 | f/2–16 | Rokkor | | | | 6 | 5 | 0.5 m (1 ft 8 in) | |
| 50 | f/3.5–22 | Macro Rokkor-QF | | | | 6 | 4 | 0.23 m (9.1 in) | |
| 53 | f/2–16 | Rokkor-PF | | | | 6 | 5 | 0.5 m (1 ft 8 in) | |
| 55 | f/1.7–16/22 | Rokkor-PF | | | | 6 | 5 | 0.5 m (1 ft 8 in) | multiple versions with different minimum aperture |
| 55 | f/1.9–16 | Rokkor | | | | 6 | 5 | 0.45 m (1 ft 6 in) | |
| 55 | f/1.8–16/22 | Rokkor-PF | | | | 6 | 5 | 0.5 m (1 ft 8 in) | multiple versions with different minimum aperture |
| 55 | f/2–16/22 | Rokkor-PF | | | | 6 | 5 | 0.5 m (1 ft 8 in) | multiple versions with different minimum aperture |
| 58 | f/1.2–16 | Rokkor-PG | | | | 7 | 5 | 0.6 m (2 ft 0 in) | |
| 58 | f/1.4–16 | Rokkor-PF | | | | 6 | 5 | 0.6 m (2 ft 0 in) | |
| Portrait lenses | |||||||||
| 85 | f/1.7–22 | Tele Rokkor-PF | | | | 6 | 5 | 1 m (3 ft 3 in) | |
| 85 | f/2–22 | Rokkor | | | | 6 | 5 | 0.85 m (2 ft 9 in) | |
| 85 | f/2.8–16 | Varisoft Rokkor | | | | 6 | 5 | 0.8 m (2 ft 7 in) | |
| 100 | f/2–22 | Tele Rokkor-PF | | | | 6 | 5 | 1.2 m (3 ft 11 in) | |
| 100 | f/2.5–22 | Tele Rokkor-PF | | | | 6 | 5 | 1.2 m (3 ft 11 in) | |
| 100 | f/2.5–22 | Tele Rokkor-PE | | | | 5 | 5 | 1 m (3 ft 3 in) | |
| 100 | f/3.5–22 | Tele Rokkor-QE | | | | 5 | 4 | 1.2 m (3 ft 11 in) | |
| 100 | f/3.5–22 | Macro Rokkor-QE | | | | 5 | 4 | 0.45 m (1 ft 6 in) | |
| 100 | f/4–32 | Macro Rokkor | | | | 5 | 4 | 0.45 m (1 ft 6 in) | |
| 100 | f/4–22 | Tele Rokkor-TC | | | | 3 | 3 | 1.2 m (3 ft 11 in) | preset aperture |
| 135 | f/2–22 | Rokkor | | | | 6 | 5 | 1.3 m (4 ft 3 in) | |
| 135 | f/2.8–22 | Tele Rokkor-PF | | | | 6 | 5 | 1.5 m (4 ft 11 in) | |
| 135 | f/2.8–22 | Tele Rokkor-PG | | | | 7 | 5 | 1.2 m (3 ft 11 in) | |
| 135 | f/2.8–22 | Tele Rokkor-QD | | | | 4 | 4 | 1.5 m (4 ft 11 in) | |
| 135 | f/2.8–22 | Rokkor | | | | 5 | 5 | 1.5 m (4 ft 11 in) | |
| 135 | f/3.5–22 | Tele Rokkor-QD | | | | 4 | 4 | 1.5 m (4 ft 11 in) | |
| 135 | f/3.5–22 | Rokkor | | | | 5 | 5 | 1.5 m (4 ft 11 in) | |
| 135 | f/4–22 | Tele Rokkor-TC | | | | 3 | 3 | 1.5 m (4 ft 11 in) | preset aperture |
| Telephoto lenses | |||||||||
| 180 | f/2.5–22 | Tele Rokkor-PF | | | | 6 | 5 | 2.5 m (8 ft 2 in) | preset aperture |
| 200 | f/2.8–32 | Rokkor | | | | 5 | 5 | 1.8 m (5 ft 11 in) | |
| 200 | f/3.5–22 | Tele Rokkor-QF | | | | 6 | 4 | 2.5 m (8 ft 2 in) | |
| 200 | f/4–22 | Tele Rokkor | | | | 5 | 5 | 2.5 m (8 ft 2 in) | |
| 200 | f/4.5–22 | Tele Rokkor-PE | | | | 5 | 5 | 2.5 m (8 ft 2 in) | |
| 200 | f/5–22 | Tele Rokkor-QE | | | | 5 | 4 | 5.5 m (18 ft) | preset aperture |
| 250 | f/4–22 | Tele Rokkor-QF | | | | 6 | 4 | 3 m (9.8 ft) | preset aperture |
| 250 | f/5.6 | Rokkor RF | | | | 6 | 5 | 2.5 m (8 ft 2 in) | catadioptric |
| 300 | f/4.5–32 | Tele Rokkor-TD | | | | 4 | 3 | 4.5 m (15 ft) | preset aperture |
| 300 | f/4.5–32 | Tele Rokkor-QD | | | | 4 | 4 | 4.5 m (15 ft) | preset aperture |
| 300 | f/4.5–22 | Tele Rokkor-HF | | | | 6 | 6 | 4.5 m (15 ft) | |
| 300 | f/4.5–32 | Rokkor | | | | 7 | 6 | 3 m (9.8 ft) | |
| 300 | f/5.6–32 | Tele Rokkor-QD | | | | 4 | 4 | 4.5 m (15 ft) | preset aperture |
| 300 | f/5.6–22 | Tele Rokkor-PE | | | | 5 | 5 | 4.5 m (15 ft) | |
| 400 | f/5.6–22 | APO Tele Rokkor-PE | | | | 7 | 6 | 5 m (16 ft) | |
| 500 | f/8 | RF Rokkor | | | | 6 | 5 | 4 m (13 ft) | catadioptric |
| 600 | f/5.6–45 | Tele Rokkor-TD | | | | 4 | 3 | 10 m (33 ft) | preset aperture |
| 600 | f/6.3–32 | APO Tele Rokkor | | | | 9 | 8 | 5 m (16 ft) | |
| 800 | f/8 | RF Rokkor | | | | 8 | 7 | 8 m (26 ft) | catadioptric |
| 1000 | f/6.3 | RF Rokkor | | | | 7 | 6 | 30 m (98 ft) | catadioptric |
| 1600 | f/11 | RF Rokkor | | | | 7 | 6 | 21 m (69 ft) | catadioptric |
| 1600 | f/11 | RF Rokkor | | | | 6 | 5 | 20 m (66 ft) | catadioptric |
| Zoom lenses | |||||||||
| 24-35 | f/3.5–22 | Zoom Rokkor | | | | 10 | 10 | 0.73 m (2 ft 5 in) | |
| 24-50 | f/4–22 | Zoom Rokkor | | | | 13 | 11 | 0.7 m (2 ft 4 in) | |
| 28-70 | f/3.5(4.8)–22 | Zoom Rokkor | | | | 8 | 8 | 0.8 m (2 ft 7 in) | In partnership with Cosina |
| 28-85 | f/3.5(4.5)–22 | Zoom Rokkor | | | | 13 | 10 | 0.8 m (2 ft 7 in) | In partnership with Tokina |
| 35-70 | f/3.5–22 | Zoom Rokkor | | | | 8 | 7 | 1 m (3 ft 3 in) | |
| 35-70 | f/3.5(4.8)–22 | Zoom Rokkor | | | | 7 | 7 | 0.5 m (1 ft 8 in) | In partnership with Cosina |
| 35-105 | f/3.5(4.5)–22 | Zoom Rokkor | | | | 14 | 12 | 1.5 m (4 ft 11 in) | In partnership with Tokina |
| 35-135 | f/3.5(4.5)–22 | Zoom Rokkor | | | | 14 | 12 | 1.5 m (4 ft 11 in) | In partnership with Tokina |
| 40-80 | f/2.8–22 | Zoom Rokkor | | | | 12 | 12 | 1 m (3 ft 3 in) | |
| 50-100 | f/3.5–16 | Zoom Rokkor | | | | 15 | 9 | 2 m (6 ft 7 in) | |
| 50-135 | f/3.5–22 | Zoom Rokkor | | | | 12 | 10 | 1.5 m (4 ft 11 in) | |
| 70-210 | f/4–22 | Zoom Rokkor | | | | 12 | 9 | 1.1 m (3 ft 7 in) | |
| 70-210 | f/4.5(5.6)–22 | Zoom Rokkor | | | | 12 | 9 | 1.2 m (3 ft 11 in) | |
| 70-300 | f/4.5(5.8)–22 | Zoom Rokkor | | | | 13 | 9 | 1.5 m (4 ft 11 in) | In partnership with Cosina |
| 75-150 | f/4–32 | Zoom Rokkor | | | | 12 | 8 | 1.2 m (3 ft 11 in) | |
| 75-200 | f/4.5–22 | Zoom Rokkor | | | | 15 | 13 | 1.2 m (3 ft 11 in) | |
| 80-160 | f/3.5–22 | Zoom Rokkor | | | | 15 | 10 | 2.5 m (8 ft 2 in) | |
| 80-200 | f/4.5–22 | Zoom Rokkor | | | | 14 | 10 | 1.8 m (5 ft 11 in) | |
| 100-200 | f/5.6–22 | Zoom Rokkor | | | | 8 | 5 | 2.5 m (8 ft 2 in) | |
| 100-300 | f/5.6–32 | Zoom Rokkor | | | | 13 | 10 | 1.5 m (4 ft 11 in) | In partnership with Tokina |
| 100-300 | f/5.6(6.7)–22 | Zoom Rokkor | | | | 10 | 8 | 1.5 m (4 ft 11 in) | |
| 100-500 | f/8–32 | Zoom Rokkor | | | | 16 | 10 | 2.5 m (8 ft 2 in) | |
| 100-500 | f/8–32 | APO Tele Zoom Rokkor | | | | 16 | 11 | 2.5 m (8 ft 2 in) | |
| 160-500 | f/8–22 | Zoom Rokkor | | | | 16 | 11 | 4.5 m (15 ft) | |
| Specialty (close-up) lenses | |||||||||
| 12.5 | f/2–16 | Bellows Micro Rokkor | | | | 4 | 4 | — | |
| 25 | f/2.5–16 | Bellows Micro Rokkor | | | | 6 | 4 | — | |
| 50 | f/3.5–32 | Auto Bellows Rokkor | | | | 3 | 3 | — | |
| 100 | f/4–32 | Bellows Rokkor-TC | | | | 3 | 3 | — | |
| 100 | f/4–32 | Auto Bellows Rokkor | | | | 5 | 4 | — | |
| 135 | f/4–22 | Bellows Rokkor-TC | | | | 3 | 3 | — | |
Leica Camera AG is a German company that manufactures cameras, optical lenses, photographic lenses, binoculars, and rifle scopes. The company was founded by Ernst Leitz in 1869, in Wetzlar, Germany. The name Leica is derived from the first three letters of the founder's surname (Leitz) and the first two of the word camera: lei-ca.
Minolta Co., Ltd. was a Japanese manufacturer of cameras, camera accessories, photocopiers, fax machines, and laser printers. Minolta Co., Ltd., which is also known simply as Minolta, was founded in Osaka, Japan, in 1928 as Nichi-Doku Shashinki Shōten. It made the first integrated autofocus 35 mm SLR camera system. In 1931, the company adopted its final name, an acronym for "Mechanism, Instruments, Optics, and Lenses by Tashima".
Nikkor is the brand of lenses produced by Nikon Corporation, including camera lenses for the Nikon F-mount.
The Minolta MAXXUM 7000 35 mm SLR camera was introduced in February 1985. It was the first camera to feature both integrated autofocus (AF) and motorised film advance, the standard configuration for later amateur and professional single lens reflex cameras.
TC-1 is a luxury point and shoot camera that was produced by Minolta. It is a compact 35 mm clad in titanium, equipped with a G-Rokkor 28mm f/3.5 lens. The TC-1 was equipped with a high quality lens and body, similar to other luxury compacts produced during the Japanese bubble economy era, including the Contax T line, Konica Hexar, Leica minilux, Nikon 28/35Ti, Ricoh GR series, and Rollei QZ 35W/35T. Expensive when initially released in 1996 with a suggested retail price of ¥148,000, it was produced in small numbers and since then has become collectible.
The Minolta X-700 is a 35 mm single-lens reflex film camera introduced by Minolta in 1981. It was the top model of their final manual-focus SLR series before the introduction of the auto-focus Minolta Maxxum 7000.
The Minolta SR-T 101 is a 35mm manual focus SLR camera with Through-The-Lens exposure metering – TTL for short - that was launched in 1966 by Minolta Camera Co. It was aimed at demanding amateur and semi-professional photographers. The SR-T 101 stayed in production for ten years with only minor changes.
Originally produced by Minolta, and currently produced by Sony, the AF 75-300mm F4.5-5.6, is a telephoto zoom photographic lens compatible with cameras using the Minolta AF and Sony α lens mounts.
The Minolta A-mount camera system was a line of photographic equipment from Minolta introduced in 1985 with the world's first integrated autofocus system in the camera body with interchangeable lenses. The system used a lens mount called A-mount, with a flange focal distance 44.50 mm, one millimeter longer, 43.5 mm, than the previous SR mount from 1958. The new mount was wider, 49.7 mm vs. 44.97 mm, than the older SR-mount and due to the longer flange focal distance, old manual lenses were incompatible with the new system. Minolta bought the autofocus technology of Leica Correfot camera which was partly used on the a-mount autofocus technology. The mount is now used by Sony, who bought the SLR camera division from Konica Minolta, Konica and Minolta having merged a few years before.
Originally produced by Minolta starting in 1985, then produced by Sony from 2006 until 2022, the AF Apo Tele 300mm f/2.8 is a professional telephoto prime photographic lens compatible with cameras using the Minolta A-mount and Sony A-mount lens mounts. The name indicates it has an apochromatic design and is part of the G series, Minolta's designation for high-performance lenses. Later versions included "High Speed" gearing; starting in 2003, the lens was recomputed with a new optical design and equipped with a focusing distance encoder for the Advance Distance Integration (ADI) flash system.
The Leica CL is a 35mm compact rangefinder camera with interchangeable lenses in the Leica M-mount. It was developed in collaboration with Minolta who manufactured it. It first appeared in April 1973 and was released in the Japanese market in November 1973 as the Leitz Minolta CL. Both the Leica CL and Leitz Minolta CL were manufactured in a new Minolta factory in Osaka. In 2017, Leica announced a new digital mirrorless camera, again named Leica CL.
The Minolta AF 50mm f/1.7 is a discontinued lens with autofocus that was produced by Minolta for A-mount single lens reflex cameras from 1985 through 2006. It is still in use today by users of digital and film SLRs from Minolta and Sony. The relatively large maximum aperture allows the photographer to take shots indoors even when operating at ISO 100 - 200.
The Minolta SR-mount was the bayonet mounting system used in all 35 mm SLR cameras made by Minolta with interchangeable manual focusing lenses. Several iterations of the mounting were produced over the decades, and as a result, the mount itself was sometimes referred to by the name of the corresponding lens generation instead.
The Minolta-35 was launched in the spring of 1947 by Chiyoda Kogaku. It was the first successful new 35mm rangefinder camera with Leica specifications to emerge on the market after World War II that uses the 39mm screw lens-mount. The Minolta-35 range of cameras was manufactured in quantities during its twelve-year production period, totalling about 40,000 units. Only the 1933 FED and the 1940 Leotax cameras had appeared successfully before it, although several Leica copies had appeared in both Italy and Japan.
The Minolta SR-2 was presented in 1958 as the first 35mm SLR camera from Chiyoda Kogaku. Popular cameras of this type at that time were mainly from Europe but a few from Japan, including the Asahi Pentax, the Miranda T and the Topcon R. The miniature SLR camera concept was conceived in the 1930s at Ihagee in Dresden, resulting in the 1936 Kine Exakta. Influential cameras designs like that of the 1939 KW Praktiflex, the 1949 ZI Contax S, and 1952 the KW Praktina marked the steady progress toward a perfected SLR. Several features of the latter seem to have influenced the design of the SR-2 although dissimilar in many respects. The obvious similarities are the stepped top plate, the carrying strap lugs, the self-timer lever and some general body features.
The Fish-Eye Rokkor 16mm f/2.8 is a prime fisheye lens produced by Minolta for Minolta SR-mount single lens reflex cameras, introduced in 1969 to replace an earlier fisheye lens, the UW Rokkor 18mm f/9.5. It is a full-frame fisheye lens with a 180° viewing angle across the diagonal.