Nikon NIKKOR ED 1200mm f-11 IF - Manual (Page 10)

NOMENCLATURE
1 Built-in telescopic lens hood
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Shoulder strap eyelet
2 Tripod collar locking screw 10 Distance scale/aperture index
3 Insertion-type filter holder 11 Aperture ring
4 Preset ring locking screw 12 Aperture-direct-readout scale
5 Focusing ring 13 Meter coupling ridge
6 Distance scale
7 Aperture scale
8 Built-in rotatable tripod mounting
14 Aperture indexing post
collar
FOREWORD
Belonging to a new generation of super-telephoto lenses, the Nikkor ED 1200mm f/11
IF offers unparalleled image quality and handling ease, plus automatic diaphragm
operation.
The use of Extra-low Dispersion (ED) glass in the lens design drastically reduces chro­
matic aberration (i.e., the inability of a lens to bring all wavelengths of visible light,
especially red and blue, into the same plane of focus). The result is images that are
crisp and virtually free of “color fringing” even when the lens is used wide open at its
maximum aperture. Nikon Integrated Coating (NIC) is applied to the surfaces of lens
elements to reduce flare and improve contrast and color rendition.
For improved handling, this lens utilizes Nikon’s Internal Focusing (IF) system, in
which the lens elements are moved internally. Without the traditional focusing helicoid,
there is no increase in the overall length of the lens as it’s focused closet; thus, it is
much easier to hand hold. In high or low temperatures, the focal length of the lens
might be slightly different when compared with what it is in ordinary temperatures. In
this case, you can rotate the focusing ring of the lens slightly beyond the infinity posi­
tion to focus accurately. In addition, the lens is lighter and more compact than pre­
vious models at the same focal length. Other convenient features include a built-in
telescopic lens hood, built-in tripod mounting collar, presettable focusing ring for
rapid refocusing to a certain distance, and full aperture through-the-lens metering with
Al-type Nikon and Nikkormat cameras*.
The
ED 1200mm f/11 IF has special insertion-type filter holders accepting either
39mm screw-in or gelatine filters. Because of its extremely long focal length, this lens is
perfectly suited for a wide variety of situations, including photojournalism, sports and
wildlife photography, as well as taking pictures of the sun and moon themselves.
* This lens is not equipped with a meter coupling shoe. When the lens is attached to a
non-AI Nikon camera, measure the exposure via the stop-down method. (Please
refer to the camera’s instruction manual for details.)
MOUNTING ON A TRIPOD
For maximum picture sharpness and freedom from camera shake, the use of a tripod
is recommended at all times. The Nikkor ED 1200mm f/11 IF is incorporated with a
sturdy,
fully rotatable (360°) built-in tripod mounting collar for just such purposes.
To attach to the tripod, position the collar tripod socket on the tripod screw and
tighten. To rotate the lens (with attached camera) for vertical or horizontal format,
loosen the collar locking screw, rotate the lens to the desired position, and retighten
the locking screw to secure the assembly. For convenience while positioning, index
marks are provided at 90° intervals around the tripod collar.
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