Leica Elmarit-R 90mm F2.8 lens. 2cam. (1970) in matching makers box. #11239

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.

Specifications:

Lens type: tele / portrait lens.

Angle of view: 27 °

Variations: 1-cam, 2-cam, 3-cam,

Optica construction: 5 lenses in 4 groups.

F-stop range : f/2.8—f/22 in half stops.

Closest focusing distance : 70cm

Smallest object of field: 140x210mm

Diaphragm setting type: 6 blades.

Filter type : Series VII+ filtering 14161R

Accessories : Built-in hood

Dimensions: 72x65mm

Weight : 500 gram