EL-NIKKOR 1:2.8 f=5cm No.681071
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- Production year 1964
- Marked «Nippon Kogaku Japan»
- 6 elements in 4 groups
- Picture angle 46°
- Black front ring, filter ∅ 40.5mm
- «LENS MADE IN JAPAN» on black lens barrel («M» with vertical sides)
- «U.S.PAT. J.PAT.PEND.» on black lens barrel
- Milled aperture setting ring
- Apertures 2.8 to 16 with click stops
- 8 iris blades
- Standard 39mm Leica-thread screw mount
- Dimensions approx. 47.5mm ∅ x 39.5mm
- Weight approx. 100g
- NIKKOR 40.5mm snap-on front lens cap
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