7
Lens
The Nikonos 1I comes fitted with a
W-Nikkor 35mm f/2.5 lens as standard
equipment The lens is sealed behind a
watertight glass plate that also covers the
aperture and distance scales. Large,
easy-togrip knobs on either side of the
lens mount control focus and diaphragm
settings. The front lens mount is threaded
to accept lens hoods, close-up lens
attachment and 52mm screw-in filters.
A UW-Nikkor 15mm f/2.8 28mm f/3.5 (both
for underwater use only) and Nikkor
80mm f/4 are also available (see p. 29,
30). Lenses for the Nikonos 11 are
designed so that their lens mounts move
independently of the inner mechanisms.
This helps to absorb the effect of water
pressure when the lenses are used
underwater.
Distance Scale
Graduated in feet and meters.
Depth-of-Feild Indicator
Red pointers show
the near and far limits of
sharpness at preselected
aperture.
Aperture-Control Knob
Controls diaphragm
aperture settings and
automatically operates the
depth-of-feild indicator.
Aperture Scale
F/stops line up with
triangular index mark.
Focusing Knob
Turn to set the measured
or estimated camera-to-
subject distance.
Positioning Pin
Fits groove on the
bayonet mount to hold
the lens in place.
Groove
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