Additional Information on
6mm f5.6 Fisheye-Nikkor Lens


Nikon 6mm f/5.6 Fisheye-Nikkor

Together with the f/2.8 lens which is of similar focal length, this is the widest of the Fisheye-Nikkor lenses, with an angle of view of 220°, 40° wider than the standard Fisheye lenses. However, internal optical design for both lenses is entirely different which also affect their handling. With this focal length and their enormous coverage, subjects slightly behind the camera will also be included in the 21.6mm diameter image on the film. There are six filters built-in on a rotating turret wheel. Its equidistant projection design is similar to the Fisheye-Nikkor 7.5mm f/5.6 and 8mm f/8.0 and 10mm f/5.6 OP Fisheye-Nikkors.

Relative: A fixed focus, preset 16.3mm f/8.0 Nikon Fisheye camera, 1960.

Fisheye 6mmf5.6.jpg (12k) Loading..
The lens covers an ultra-wide 220° hemisphere. It produces a circular picture image of 21.6mm diameter, the 6mm Fisheye offers more impact in the fisheye photography and is especially useful in scientific and industrial photography. Interiors of constricted areas, such as tubular or tank construction, are apt subjects for the 6mm Fisheye.

Note: The finder, which has only 160° field view is less than the lens coverage and it can also be shared to use with 10mm OP Nikkor.

AF-Nikkor Fisheye 16mm f/2.8 D |

This lens may also be applied to measure the field of view in a plane or an airport control tower, or that of a driver in an automobile or a speaker in a lecture room. The reflex mirror of the camera must be in the up and locked position before the lens is mounted. The supplied accessory finder, 160° optical external viewfinder DF-1, mounted onto the flash coupler of the Nikon F and Nikon F2, may be used to locate the center of the picture field because neither you can make use of the depth of field scales as the lens is a fixed focus type, there is no way to focus through the lens once the lens has been mounted onto a suitable Nikon SLR camera that has mirror lock up mechanism (For cameras other than Nikon F and Nikon F2 series, a flash adapter to fit F and F2 flash shoe is required).

This lens was introduced in 1969 and actually being shown as prototype as early as 1967. Strangely, the early prototype lenses were being introduced as an odd 6.25mm lens instead of exacting 6mm. 6 filters can be rotated in place. The projection has a round image of approx. 21.6mm onto the film.

Physical Comparison between two 6mm lenses.

It has been a good alternative to the very expensive Fisheye-Nikkor 6mm f/2.8 which comes in a hefty 5.2 kg in weight which often restrict handling and mobility. This f/5.6 version only weighs 430g and has served quite a long life span of product cycle even after Nikon announced the availability of the f/2.8 lens. It stretched until 1977 when Nikon released the new Ai-Specification of the metering system employed in all their SLR camera and lenses.


Focal length:
Maximum aperture: 1:5.6
Lens construction: 9 elements in 6 groups


PDF file (34k)
Gif Image (21k)

Picture angle: 220°
Projection formula

Image size on film
21.6mm in diameter
Fixed Focus
Distance scale: Graduated both in meters and feet up to 0.3m and 1 ft
Aperture scale: f/5.6 - f/22
Aperture diaphragm:
Attachment size: 89mm (P=0.75)
Filter: Built-in, L1A, Y48, Y52, 057, R60 & XO
Dimensions: 92mm dia. X 81mm length (3-5/8 in. X 3-3/16 in.
Weight: 430g (15.2 oz)
Leatherette provided. 89mm screw-in front cap, rear cap type 3F (108 - 03 - 400), fisheye finder (108 - 03 - 500); Nikon Product Code No. for this lens: 108-03-010

NOTE: Production Serial Number was believed to have started from 656001 for this non-Ai-Spec lens (1969) and those produced after 1978 carried 660102. Source: Nikon Hand Book.

Nikkor Circular Fisheye Lenses:
6mm - f/2.8 | f/5.6 | 7.5mm f/5.6 | 8mm - f/2.8 | f/8.0 | 10mm OP f5.6 | 16mm Full frame Nikkor-Fisheye Lenses - f/3.5 Non-Ai - f/3.5/f/2.8 Ai - f/2.8 Ai-S - f/2.8 AF-D

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Recommended links to understand more technical details related to the Nikkor F-mount and production Serial Number: by: my friend, Rick Oleson by: Hansen, Lars Holst

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Credit: MCLau®, who has helped to rewrite some of the content appeared this site. Chuck Hester® who has been helping me all along with the development of all these Nikon websites; Lars Holst Hansen, 'Hawkeye' who shares the same passion I have; Ms Rissa, Sales manager from Nikon Corporation Malaysia for granting permission to use some of the official content; Ted Wengelaar, Holland who has helped to provide many useful input relating to older Nikkor lenses; Some of the references on production serial numbers used in this site were extracted from Roland Vink's website; Hiura Shinsaku from Nikomat Club Japan. Lastly, to all the good people who has contributed their own expeience, resources or kind enough granted permission to use their images of their respective optic in this site. It is also a site to remember a long lost friend on the Net. Note:certain content and images appeared in this site were either scanned from official marketing leaflets & brochures published by Nikon and/or contribution from surfers who claimed originality of their work for educational purposes. The creator of the site will not be responsible for may discrepancies arise from such dispute except rectifying them after verification. "Nikon", "Nikkormat", "Nippon Kokagu KK" & "Nikkor" are registered tradename of Nikon Corporation Inc., Japan. Site made with an Apple IMac.