Nikon Fisheye User Manual
Fisheye-Nikkor
6mm
f/2.8
Nikon
INSTRUCTION MANUAL
GEBRAUCHSANWEISUNG
MODE
MANUAL DE INSTRUCCIONES
D'EMPLOI
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English Page 10
Depth-of-field table Page 34
Deutsch Seite 16
Scharfentiefetabelle Seite 34
Franijais Page 22
Table de profondeur de champ—Page 34
Espanol Pagina 28
Tabla de profundidad de campo—Pagina 34
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9
NOMENCLATURE
1 Distance Scales
2 Distance Index
3 Aperture Index
4 Aperture Scale
5 Meter Coupling Shoe
6 Aperture-Direct-Readout Scale
FOREWORD
The Fisheye-Nikkor 6mm f/2.8 lens has the widest picture angle of any lens
on the market-an amazing 220 degrees. It records not only everything in
front, above, below and to either side of the lens but also sees slightly behind
itself. Multilayer coating reduces reflection, thus minimizing flare and ghost
images. This results in improved contrast and excellent color rendition.
Unlike other fisheye lenses, it fits the camera without any need to lock up
the reflex mirror and takes full advantage of the reflex viewing feature of
Nikon and Nikkormat cameras.The focusing range extends down to 0.9 foot
to permit pinpoint focusing on foreground objects while throwing the background out of focus at large apertures, and the aperture diaphragm off/2.8
means that the viewf inder image is extra-bright for easy viewing and focusing
even in dim light. A set of five filters is built into the lens barrel.
FISHEYE LENSES
The usual fisheye lens covers a 180° hemisphere and produces a circular
image on
film.
Barrel distortion is considerable, since the circumference of
the image circle corresponds to a straight line. The Fisheye-Nikkor 6mm
f/2.8 captures an extra 40° of picture angle and records the scene with
varying degrees of distortion in the form of a circular image 23mm in
diameter.
Like other fisheye lenses, the Fisheye-Nikkor 6mm f/2.8 applies the
distant projection formula (y = Cd) in order to accommodate the extra-wide
picture angle within a field of finite size. The zenith angle of any point in
the image recorded on film is proportional to its distance from the center of
the image (see Photogrammetry, page 14). This makes the lens suitable for
scientific requirements such as measuring the zenith or azimuth angles of
astronomical bodies or recording cloud distribution patterns in the sky. It is
also useful in surveying work which requires checking the camera position.
And its extra coverage makes possible more accurate measurements of
greater detail over the 180°
unique special effects.
7
Meter Coupling Ridge
8
Aperture Indexing Post
9
Aperture Ring
10
Filter Selector Dial
11
Focusing Ring
12
Base
field.
The lens is also widely used for creating
equi-
10
MOUNTING THE LENS
A
Position the lens in the camera's bayonet mount, lining up the aperture
index on the lens with the lens mounting index on the camera. Twist the
camera clockwise until it clicks into place.
To remove, depress the lens release button on the camera and twist the
camera counterclockwise.
Note:
When mounting the lens on a camera with a meter coupling lever (Al type),
make sure that the camera's meter coupling lever is correctly positioned; when mounting on a camera without this lever (non-AI type), "manual" maximum aperture indexing is required. In both cases, refer to the camera's instruction manual.
Caution:
Keep the accessory front leather lens cap in place when mounting or removing the lens and when loading or unloading
lens is not in use to prevent damage to the lens surface.
film.
Always replace this cap when the
AUTOMATIC APERTURE DIAPHRAGM B
The Fisheye-Nikkor's automatic diaphragm couples directly to the thru-the-
lens meter of the Nikon F3, any Nikon F2 Photomic or other Nikon/
Nikkormat camera for full aperture exposure measurement via a meter cou-
pring ridge for Al cameras or a meter coupling shoe for non-AI cameras. The
aperture ring has click-stop settings for each full f-stop from f/2.8 to f/22
and can also be set to intermediate openings for more precise exposure. An
"aperture-direct-readout" scale is also engraved on the lens to allow direct
reading of the aperture setting in suitably equipped camera finders. The
procedure for exposure measurement is similar to that used with other
Nikkor lenses. For details, see the instruction manual supplied with your
camera.
FOCUSING C
The Fisheye-Nikkor 6mm f/2.8 lens focuses all the way from infinity down
to 0.9 foot (0.25m). This means you can focus on foreground objects while
throwing the background out of focus or move in close to the subject
out stopping down the lens.
To focus, look through the camera viewfinder and turn the focusing ring
until the image on the screen appears needle sharp. The automatic
diaphragm feature and wide f/2.8 maximum aperture guarantee the
brightest possible image for viewing and focusing, even in dim light. Depth
of field can be observed by simply pressing the camera's depth-of-field
preview button; or, refer to the table on page 34.
with-
il
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