Leitz Summicron-C 1:2/50 mm Prototyp / Leitz Summicron-C 50 mm f/2 Prototype

Prototype of a collapsible 50 mm Summicron for the Leica CL. Only a few individual experimental units of this lens are known, a serial production did not follow. Interestingly, the version offered here is based on formula C-276 that was used for the Elcan 50 mm f/2 to the Leica KE-7A. The lens head is locked and cannot be retracted, possibly to prevent damage to the swing-out arm with the light meter's CdS cell. The optics with haze and coating defects. Provenance: Allen Collection. Literature: Dirk Daniel Mann, "Projekt E 530: Compact LEICA", Vidom 118, p. 36ff.; James L. Lager, "Leica, an illustrated History", Vol. II (lenses), p. 233; James L. Lager, "Leica, an illustrated History", Vol. I (cameras), p. 249.