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Nikkor 18mm f/3.5 AI-S MF

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DESCRIPTION
Discontinued in 2005

1. 3.5-22 aperture range and 1:3.5 aperture ratio
2. 100 degrees Picture angle
3. CAC close-range correction
4. Automatic diaphragm type

11 elements in 10 groups
Closest Marked Focusing Distance [m] 0.25
Filter Attachment Size [mm] 72
Dimensions: Dia x Length (extension from lens mount), [mm] 75 x 61.5
Weight [g] 350

LEGEND
MFManual Focus
AI-SA variant of AI designed to be used with Program and Shutter-priority exposure modes (1982). Manual focus lens. Distinguished by smallest aperture being printed in orange and a small scoop on the bayonet flange, which transmits aperture info. Otherwise same as AI

by Ken Rockwell, Test Review
http://www.kenrockwell.com/nikon/18f35ais.htm