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Minolta RF Rokkor
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 RF Rokkor 250 mm 1:5.6 | |
| Maker | Minolta |
|---|---|
| Technical data | |
| Type | Special Prime |
| Focal length | 250, 500, 800, 1000, 1600 mm |
| Aperture (max/min) | varies |
| Close focus distance | varies |
| Max. magnification | varies |
| Construction | varies elements in varies groups |
| Features | |
| Ultrasonic motor |  No |
| Macro capable | No |
| Unique features | Catadioptric system |
| Application | Telephoto |
| History | |
| Discontinuation | 1989 |
| Successor | Minolta AF Reflex 500mm f/8 for A-mount |
Minolta manufactured and sold a series of RF Rokkor prime catadioptric lenses for its SR-mount single-lens reflex cameras starting in 1965 with the introduction of the 1000 mm f/6.3 RF Rokkor. This series of mirror lenses included focal lengths ranging from 250 mm to 1600 mm by the time the Rokkor lens brand was retired in the 1980s following the introduction of the autofocus Minolta A-mount system.
Exposure control was provided through neutral-density filters.
History
[edit]| FL | Ap. | Years | Constr. | Angle | Min. focus | Φ×L | Wgt. | Filt. | Notes |
|---|---|---|---|---|---|---|---|---|---|
| 250 | f/5.6 | 1979–1983? | 6e/5g | 10° | 2.5 m (8.2 ft) | 66.5×58 mm (2.6×2.3 in) | 250 g (8.8 oz) | 62F/39R | [2][3] |
| 500 | f/8 | 1978–1983? | 6e/5g | 5° | 4 m (13.1 ft) | 83×98.5 mm (3.3×3.9 in) | 600 g (21.2 oz) | 77F/39R | [2][4] |
| 800 | f/8 | 1972–1973 | 8e/7g | 3°10' | 8 m (26 ft) | 125×166.5 mm (4.9×6.6 in) | 1,900 g (4.2 lb) | slide/39R | UV and ND4× slide-in filters (one must be used) with additional 39mm rear-mounted filters[5] |
| 1973–1983? | built-in / 39R | UV and ND4× built-in filters (switchable) with additional 39mm rear-mounted filters; lens colored white after 1981[2][5][6][7]: IV-85 | |||||||
| 1000 | f/6.3 | 1965–1973 | 7e/6g | 2°30' | 30 m (98 ft) | 217×594.5 mm (8.5×23.4 in) | 10,600 g (23.4 lb) | 200F/49R (turret) | Dual filter turrets[7]: IV-87 [8][9][10] |
| 1600 | f/11 | 1974–1977 | 7e/6g | 1°30' | 21 m (69 ft) | 178×320 mm (7.0×12.6 in) | 6,700 g (14.8 lb) | slide/39R | UV and ND4× slide-in filters (one must be used) with additional 39mm rear-mounted filters[2][6][11] |
| 1977–1983? | 6e/5g | 20 m (66 ft) | 178×322.5 mm (7.0×12.7 in) | 6,850 g (15.1 lb) | built-in / 39R | UV and ND4× built-in filters (switchable) with additional 39mm rear-mounted filters; lens colored white after 1981[2][6][11] |
References
[edit]- ^ "Minolta Lenses" (PDF). Minolta Corporation. March 1981 – via Pacific Rim Camera, Reference Library.
- ^ a b c d e "A guide to the Minolta SLR system of creative photography". Minolta Camera Co., Ltd.
- ^ McGloin, Joe. "Minolta 250mm Lenses". subclub.org. Retrieved 5 June 2026.
- ^ McGloin, Joe. "Minolta 500mm Lenses". subclub.org. Retrieved 5 June 2026.
- ^ a b McGloin, Joe. "Minolta 800mm Lenses". subclub.org. Retrieved 5 June 2026.
- ^ a b c "A guide to the Minolta SLR system of creative photography" (PDF). Minolta Camera Co., Ltd. – via Pacific Rim Camera, Reference Library.
- ^ a b Minolta System Handbook (PDF). Amphoto. 1972. ISBN 0-8174-0476-7. LCCN 73-171941.
- ^ McGloin, Joe. "Minolta 1000mm Lens". subclub.org. Retrieved 5 June 2026.
- ^ "Minolta Technical Bulletin No. 7: Telephotography with Minolta Rokkor Lenses". Minolta Corporation. 1965. Retrieved 2 June 2026.
- ^ "The Minolta SR System: Rokkor Interchangeable Lenses" (PDF). Minolta Corporation. 1967 – via Pacific Rim Camera, Reference Library.
- ^ a b McGloin, Joe. "Minolta 1600mm Lenses". subclub.org. Retrieved 5 June 2026.