6mm f/2.8 & f/5.6 Fisheye-Nikkor
Introduced in 1972, the f2.8 fisheye Nikkor was one of the two fastest fisheye lens available on the market (together with the 8mm f2.8) and it was also the widest commercial production lens with the broadest angle of view lens (Still holds the honour). These Fisheye-Nikkor lenses provide an amazing picture angle of 220° - 40° wider than the standard fisheye lenses. Everything in front of, above, below and to either side of the lenses is recorded on the film as a circular image; they even "see" slightly behind themselves. Interestingly, the 6mm f2.8 Fisheye Nikkor was introduced almost at the same time with the longest reach Nikkor lens - the 2000mm f11 Reflex Nikkor.
The 6mm Fisheye-Nikkors are designed according to the equidistant projection formula like the 8mm f/2.8 Fisheye-Nikkor, but because of the wider picture angle they offer a more dramatic impact. These lenses were originally developed for special scientific and industrial applications in which wider-than-180° coverage is required such as surveillance work, photographing the interiors of pipes, boilers, conduits, cylinder bores and other constricted areas. And in advertising and commercial photography they are used extensively for dramatic effects.
The 6mm f/2.8 Fisheye-Nikkor has an automatic diaphragm, permitting thru-the-lens viewing and focusing, and is meter-coupled for TTL exposure control with all Nikon SLR camera models. Its relatively fast f/2.8 speed is a valuable aid in photography under dim lighting conditions, or where faster shutter speeds are imperative. It contains 5 built-in filters.
The 6mm f/5.6 Fisheye-Nikkor is a fixed-focus lens, requiring no focusing because of its immense depth-offield. The camera mirror must be locked in 'Up' position for mounting and operation. A special 160° Fisheye Viewfinder, supplied with the lens, is used to center the picture field. The lens has 6 built-in filters.
6mm f/2.8 Fisheye-Nikkor .
This is a compact fisheye lens that excels in versatility because of its fast lens speed, reflex viewing and thru the-lens metering capabilities, as well as the unique fisheye pictorial qualities it delivers. it is excellent for the initial approach to creating fisheye effects in general as well as special-purpose photography. Designed on the equidistant projection formula, this fisheye lens covers an angle of view. of 180° and produces a circular image on the film. The automatic diaphragm and the bright f/2.8 aperture facilitate viewing and focusing through the viewfinder. Exposure measurement is done at full aperture. Its compact size and light weight allow hand-held shooting. All these advantages contribute to the ease of handling and the versatile application of this lens in commercial and advertising photography as well as in scientific photography, photojournalism and news and sports coverage. This lens comes with 5 filters on a rotating turret.
Generally speaking, a fisheye lens has a highly curved protruding front element resembling a fisheye which enables it to take in a wide picture angle and yield a circular picture image.
The back focus of the 8mm Nikkor is designed longer than the lens' focal length in order to allow clearance for the movement of reflex mirror in the camera.
10mm f/5.6 OP Fisheye-Nikkor
This is a highly specialized lens that offers unique orthographic projection (OP) characteristics producing a circular image of 180°. The image reproduced, however, is larger in the center and gradually becomes more compressed toward the periphery than the images produced by other Fisheye-Nikkors. To meet the exacting OP requirements, an aspherical front lens is employed. This projection formula provides a special configuration through which the luminance of a place is measured.
When the light source is photographed with the OP Fisheye-Nikkor, the proportion of the image area of the light source to the total area represents the luminance or brightness of the place. This proportion is called the "configuration factor,' or "sky factor" when the light source is the sky. This feature is effectively applied to architectural design, civic improvement, street lighting, fire safety studies and other specialized applications. The lens is also useful in advertising photography to emphasize the main subject by taking advantage of the OP characteristics. Another characteristic of the OP design is that subjects of the same brightness are reproduced with equal density, no matter where they are positioned in the picture. Therefore, even with the use of narrow latitude color film, uniform image brightness is obtained over the entire circular field. Like the 6mm f/5.6 Fisheye-Nikkor, this lens also requires no focusing due to its enormous depth-of-field, and is used with the camera's reflex mirror locked in "Up" position. The lens comes with a special 160° viewfinder for centering the subject and six built-in filters on a rotating turret.
16 mm f/3.5 Fisheye-Nikkor
Introduced in 1973 with the 15mm ultra-wide. In contrast to other Fisheye-Nikkors which were primarily designed for scientific and industrial applications, this Fisheye-Nikkor has been designed to provide special effects in general photography. Other Fisheye-Nikkors produce a circular image on the film, but this lens delivers an image which fills the entire 24mm x 36mm film format. Its near hemispheric coverage of 170° provides extreme wideangle pictures with the dramatic perspective effect inherent in fisheye lenses. With the combined effects of this Fisheye-Nikkor, the photographer can enjoy creating special ultrawideangle effects˝in advertising and other commercial photography, photojournalism and art photography. The lens is extremely portable, with its size and weight comparable to a normal lens. It has an automatic diaphragm and permits thru-the-lens viewing and metering. Color aberration is well corrected, providing high contrast images even at full-aperture. The lens has three interchangeable filters plus one plain glass filter built into the lens barrel.
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