Minolta RF Rokkor 1600mm f/11 MIRROR manual focus lens. Made in Japan. Serial # 1015519. Circa 1974. CATADIOPTRIC design. Lens will fit Minolta 35mm film manual focus cameras, like Minolta SRT 201, XK, XE-5, XE-7, X-570 and Minolta X-700 manual focus cameras. Won't fit Minolta Autofocus or Minolta/Konica - Sony digital SLR cameras directly. This lens will work on most mirrorless digital camera with the proper adapter. This is a unique mirror telephoto lens that has fixed f/11 aperture. Focusing with lens is quick and easy. Lens takes rear filters ( 5 included ). Minimum focus distance is about 66 ft. or 21 m. Lens is Ex++/Mint- or 9.5 of 10 cosmetic condition. No dings or dents. Clean glass. Clean coatings. Clean mirror, without any separations. Smooth focus. This rare and seldom seen lens makes for a fantastic SUPER long telephoto lens for your 35mm Minolta Film or Sony Digital with proper Adapter. Lens comes with original Minolta metal lens hood, four rear mounted filters Or, Y48 Yellow, ND 4x, R60 red  and FNo 11. 

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FOCAL LENGTH:    1600mm
f-STOPS:         11
PERIOD:          1974-1980
INSCRIPTION: MINOLTA RF ROKKOR-X 1:11 f=1600mm CATADIOPTRIC design  
DESIGN:       6/5
FILTER:  special
DIAPHRAGM:    fixed
MC:         no
MD:       no
CLOSE FOCUS:    66'
SIZE:       7"x12.7"
WEIGHT:      15lbs. 1.6oz. 

A new mirror/reflex lens to the Minolta line-up of SLR lenses in 1974, labelled "RF". It’s rear filtration system consisted of slide-in and screw on filters. It came with an INTEGRAL slide-in filter marked "F11", and another slide-in ND4X filter marked "F22" -- as well as 39mm, screw-in L39 (UV), Y48 (Yellow), O56 (Orange), and R60 (Red) filters.

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Original rear and leather front lens cap. Original Minolta hard carrying Case. Sells with NO RESERVE at a price of $5195. I have LOT more rare and FAST Minolta MD and Minolta AF lenses, Sony Cameras and Lenses, 35mm Rangefinder Cameras and Lenses, Medium and Large Format cameras, lenses and accessories on my other Auctions, eBay Store and web page.