Foreword – Nikon AI Micro-NIKKOR 105mm f-4 User Manual
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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 (°o) 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.