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FOREWORD
The Micro-Nikkor 105mm f/4 is a special telephoto lens designed for
close-up photography at high reproduction ratios. It features the same
optical construction as the much-acclaimed Bellows-Nikkor 105mm
f/4,
but with a special focusing helicoid that enables operation from
infinity (°°) to a reproduction ratio of 1 : 2 (half life-size) without the
need for any adapters. The lens offers "automatic maximum aperture
indexing"
(Al) with suitably equipped cameras, via the meter
cou-
pling ridge provided. The ridge and the auto diaphragm function to-
gether to permit full aperture exposure measurement; the lens is also
fitted with a meter coupling shoe to permit the same operation with
Nikon cameras which lack the Al facility. In terms of optical perform-
ance,
the Micro-Nikkor's excellent flatness of field is a stand-out
feature, enabling virtually distortion-free images at all reproduction
ratios.
The application of Nikon Integrated Coating (NIC) further en-
hances performance by increasing image contrast, while reducing flare
and ghost, for outstanding color reproduction.
When the Micro-Nikkor
1
05mm is used with the special Auto Extension
Ring PN-11 or PN-1, focusing is further extended from 1 : 2 to 1 : 1 for
full life-size reproduction.
To get the best results from your Micro-Nikkor 105mm f/4, read this
instruction manual carefully. Keep the manual handy for reference
until you have thoroughly familiarized yourself with the lens and its
operation.
A few minutes of preparation will help you avoid costly
mistakes.