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PT0105. Prototype lens, calculated in 1959 by GOI. Very few samples released by GOI in 1959-1960. Focal length - 2 cm, aperture range f4.5 - f22. Focusing range from 0.5m to infinity. Number of elements/groups: 8/5.  Angular field - 92º. Kiev (Contax) mount. An earliest so far known lens has s/n #60036407 (private coll.).


Sample opposite from private collection in Europe.


PT0105 - Sputnik-4 prototype lens.



PT0115. Less than 10 prototype lenses released by KMZ in 1960. Zorki (M39) mount. Slightly changed optical scheme of the particular lens (see picture below). An earliest so far known lens has s/n #0005 (I.Stolyar coll.)


Sample opposite scanned from KMZ Catalogue (1963).


PT0115 - Sputnik-4  prototype lens #0001.



PT0115 - Sputnik-4  prototype lens #0006.