NIKKOR-S Auto 1:2 f=5cm No.550252
- «Nippon Kogaku Japan»
- production year 1961
- first 5cm lens was No.520101
- 7 elements in 5 groups
- picture angle 46°
- chrome front ring, filter ∅ 52mm
- distance scale graduated in feet from 2 ft. to ∞
- «LENS MADE IN JAPAN» on black focusing ring («M» with slanted sides)
- infrared mark is a red dot
- «PAT.PEND.» on chrome lens barrel
- aperture scale f/2 to f/16, 6 iris blades
- no bayonet screws
- dimensions approx. 61mm ∅ x 50mm
- weight approx. 200g
- NIKKOR 52mm snap-on front lens cap
- NIPPON KOGAKU F rear lens cap
- 52mm 5cm 1:2 Nikon F snap-on lens hood, US.PAT. J.PAT. PEND.
- came with Nikon F Photomic body 6458972
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