Nikon Micro-Nikkor 200mm f/4 IF User Manual
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The fully automatic diaphragm of the Micro-
Nikkor enables focusing with maximum image
brightness throughout the entire focusing range
of the lens. As the image is constantly viewed
at the maximum aperture setting (i.e., f/4),
the depth of field is minimized so that the
image snaps in and out of focus rapidly and
distinctly.
To focus, turn the focusing ring until the image
on the focusing screen appears sharp and crisp.
Via the special focusing helicoid, the Micro-
Nikkor operates continuously from infinity
(oo) to 0.71m (2.34 ft) for a reproduction
ratio of 1:2.
The distance scale on the focusing ring is
marked in both meters (white) and feet (yel
low). These figures indicate the distance from
the subject to the camera’s film plane.