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 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
+Minolta RF Rokkor catadioptric telephoto lenses FL Ap. Years Constr. Angle Min. focus Φ×L Wgt. Filt. Notes 250 1979–1983? 6e/5g 10° 62F/39R 500 1978–1983? 6e/5g 5° 77F/39R 800 1972–1973 8e/7g 3°10' slide/39R UV and ND4× slide-in filters (one must be used) with additional 39mm rear-mounted filters 1973–1983? built-in / 39R UV and ND4× built-in filters (switchable) with additional 39mm rear-mounted filters; lens colored white after 1981 1000 1965–1973 7e/6g 2°30' 200F/49R (turret) Dual filter turrets 1600 1974–1977 7e/6g 1°30' slide/39R UV and ND4× slide-in filters (one must be used) with additional 39mm rear-mounted filters 1977–1983? 6e/5g built-in / 39R UV and ND4× built-in filters (switchable) with additional 39mm rear-mounted filters; lens colored white after 1981
References