Fisheye-Nikkor 6mm f/2.8

OBJECT TYPE: Lens
MANUFACTURER: Nippon Kogaku K.K.
NATIONALITY: Japanese
PLACE MANUFACTURED: Japan, Tokyo
OBJECT NAME VARIATION: 6mm f/2.8 Fisheye-Nikkor
INTRODUCTION DATE: ca. 1975
FILM TYPE: 35mm
FUNCTIONAL TYPE: fisheye

NOTES:
  Focal length/Aperture: 6mm f/2.8
  Lens construction: 12 elements in 9 groups
  Picture angle: 220 degrees
  Diaphram: Automatic
  Aperature scale: f/2.8 - f/22 on both standard and direct-
  readout scale
  Exposure measurement: Via full aperature method; meter coupling
  ridge provided for AI camera and meter
  coupling shoe for non-AI cameras
  Distance scale: Graduated in meters and feet from 0.25 m
  (0.9 ft) to infinity
  Weight: 5.2kg
  Dimensions: 236mm dia. x 171mm long (overall); 159mm
  extension from flange
  Filters: Built-in; L1A, Y48, Y52, O56, R60
  Front lens cap: Slip-on
  Lens case: Metal case

OBJECT IDENTIFIER: N719.00023
BIBLIOGRAPHIC REFERENCE: George Eastman House Information File - Technology Collection.//