Era-14 Эра 14 135mm f2.8
by badgerov8000
Very rare soviet reproduction lens designed for microfilm installations. Optical design - semi-glued asymmetrical anastigmat, 6 components in 5 groups.
Photographic resolution (on Kodak HR film): in the center of the field - 440 lines/mm; at the edge of the field - 400 lines/mm. (data on resolution are given from D.S. Volosov’s book “Photographic Optics”).
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