Leica Summicron-R 90mm F2 (3 cam ) 1978. Complete. Second version

Leica’s series of lenses for single lens reflex cameras are designated R-series lenses, and are generally identified by the addition of the letter-R- after the lens name.  The Leica R mount is a three lug bayonet mount with a 47mm flange focal distance. Although the R lens bayonet has remained substantially unchanged since its introduction in 1964, the R lenses can be divided into 4 general categories: one-cam lenses , being the lenses manufactured concurrently with and intended for use on the original Leica-flex body; two cam lenses , being the lenses manufactured concurrently with and intended for use on the Leica-flex SL and SL2 models, as well as the original Leica-flex three cam lenses, being the lenses manufactured concurrently with and intended to use on the Leica R3 and later models only.

Production era: 1970-1981

Lens type:  tele / portrait lens.

Variations : 2 and 3 cam versions

Focal Length  : 90mm

Angle of View : 27˚

Format : 35mm

Diaphragm : 8 blades

Max aperture:  f/2 to f/16

Lenses/ groups : 5 elements in 4 groups.

Min focus distance : 0,7m

Manual focus : Yes.

Filter type : Series 7 filter

Filter size : Ø 55 mm

Weight : 560 grams

Dimensions : 70x62mm

Made in Canada.