Micro-NIKKOR 1:3.5 f=5.5cm No.171550
- «Nippon Kogaku Japan»
- production year 1961
- type 1
- 50th lens produced (first 5.5cm micro lens was No.171501)
- 5 elements in 4 groups, picture angle 43°
- flat rotating front ring with integrated aperture ring (preset diaphragm), black, filter ∅ 52mm
- aperture scale f/3.5 to f/22, 7 iris blades
- distance scale graduated in meters only from 0.214 meters to infinity (∞)
- no «LENS MADE IN JAPAN» engraving
- «PAT.PEND.» on chrome lens barrel
- bayonet fixed by 3 slot screws
- dimensions approx. 65mm ∅ x 63mm
- weight approx. 315g
- NIPPON KOGAKU 52mm snap-on front lens cap
- NIPPON KOGAKU F rear lens cap
- Nikon L39 52mm screw-in filter, chrome rim
- original maker's box, grey/black, «MICRO Nikkor 55mm F:3.5»
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