Extremely rare "Zonar" lens 120 mm, f 5,5 from C.E. Riese, Berlin

Extremely rare "Zonar" lens 120 mm, f 5,5 from C.E. Riese, Berlin
lens in sunk mount and iris diafragm of an almost unknown lens maker from the 1890 -1920s in Berlin.

Riese was a small lens manufacturer in Berlin-Schöneberg. You can't find his name in the "lens collectors vademecum".

The engraving on the lens says: C. E. Riese Berlin No. 577 "Zonar" f 5,5 F= 120 mm D.R.P. ang

weight - 156 gr.
diameter with lens mount 6 cm
length 3,5 cm
in sunk mount with integrated lens mount
back-part goes inside the camera: Ø 3,3 cm, length is 2 cm

The front element has cleaning marks and the black laquer is worn . The iris runs smoothly from f 5,5 to f 31 (with marks and engraving on f 5,5, 7,7, 11, 15, 22 and 31). It is an unsymmetrical anastigmat with kitted elements, suitable for at least 4x5 inch. A good lens hood will increase the flare and makes it usable for your large format photo works.

This small lens was probably mounted on a 9x12 cm strut camera from that era.

Riese provided, amongst others, lenses for Ernemann. Beside the Zonar, he made at least the Cerus, Cerusar, Planoskop and Doppel-Anastigmats in various focal lenths.

Give your collection a unique piece!

You can collect the item in Amsterdam. Otherwise I will send it with PostNL, signed on delivery and ensured.

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