NIKKOR-Q Auto 1:4 f=20cm No.169223
- «Nippon Kogaku Japan», production year 1961
- 13th lens produced (first 20cm lens was No.169211)
- 4 elements in 4 groups, picture angle 12°20′
- Built-in retractable lens hood without chrome button
- Black front ring, filter ∅ 52mm
- Lens data engraved on chrome lens barrel
- Scalopped focusing ring
- Distance scale graduated in feet from 10 ft. to infinity (∞)
- White «LENS MADE IN JAPAN» on black focusing ring («M» with slanted sides)
- Black «PAT.PEND.» on chrome lens barrel
- Ribbed aperture setting ring
- Aperture scale f/4 to f/22, 6 iris blades
- No bayonet screws
- Dimensions approx. 73mm ∅ x 161.7mm
- Weight approx. 560g
- NIPPON KOGAKU 52mm snap-on front lens cap
- NIPPON KOGAKU F rear lens cap
- Nikon 52mm L38 screw-in filter, chrome rim
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