Nikon QD.C Auto 5.6 15mm Wide angle lens.
The 15mm Nikkor-QD.C Auto f/5.6 Wide angle lens was the original version and introduced as an NON-Ai optic back in 1973 (see picture below); this is also Nikon's challenge to design extremely short focal length during the early seventies. The lens' designation which ended with a "C" indicated Nikon's proprietary multi coating NIC process was applied to the lens for greater light transmission and a more faithful natural colour rendition. But the letter "C" was omitted in the later version which is understandable as it was almost as a standard feature on lens identification on most Nikkor lenses produced during that era.
Credit: Image courtesy of Photo_Arsenal-Worldwide ® Germany. The Company also maintains an active EBAY Store, trading many used and new photo equipment of various labels. Photo Aersenal can be contacted at Photo Arsenal Boris Jamchtchik, Altenfurter Str.16a 90475 Nuernberg Germany Tel.: +49 (0) 911/ 4008081 E-Mail: firstname.lastname@example.org. Arsenal has a office in Hong Kong, headed by Evan Wong. Address is: Ting Shan East Selling-Office Unit 210, 2/f., Mirror Tower, 61 Mody Road, Kowloon, Hong Kong Phone:>Image(s) copyright © 2008. All rights reserved. Please respect the visual property of the contributing photographer.
It was the widest interchangeable wideangle lens for a 35mm camera at the time of its introduction. During the same year, it was debuted with another remarkable lens - the Full Frame Fisheye-Nikkor 16mm f/3.5; along with these lenses, Nikon also updated their fine series of Nikon F2 SLR with a Nikon F2S Photomic model - which for the first time, enabled the mechanical Nikon F2 SLR camera to enjoy shutter Priority AE photography via the remarkable accessory of EE Aperture Control Unit DS-1 - What an eventful series of events huh ?
Physically, it is still can be considered as relatively compact, the 15mm's enormous depth-of-field practically eliminates the need to focus at smaller f/stops, moderate or greater distances.
The lens has an amazing picture angle of 110°, the widest among all Nikkor lenses except the Fisheye Nikkors during the early '70. It was one of the few first batch of Nikkor lenses that have employed with a "floating element" system to maintain edge-to-edge sharpness even at its closest focusing distance of 0.3m (1ft). Its great depth of field provides extensive focusing latitude, virtually eliminating the need for focusing when the lens is slightly stopped down.
Meter coupling prong: Integrated (fully open exposure metering)
Specifications: Applied for both Ai and Non-Ai versions
Focal length: 15mm
Maximum aperture: 1:5.6
Lens construction: 14 elements in 12 groups
Picture angle: 110° at infinity
Distance scale: Graduated both in meters and feet up to 0.3m and 1 ft
Aperture scale: f/5.6 - f/22
Aperture diaphragm: Fully automatic
<<< --- An early version, old NON-Ai 15mm f/5.6C lens.
Attachment size: - Filter: Built-in - yellow (Y48), orange (O56), red (R60), plain glass (N)
Hood: Built-in; Dimensions: 92mm dia. X 88.5mm length (3-5/8 in. X 3-15/32 in.)
Weight: 700g (24.7 oz); Accessories: CL-26 lens case
The ultra-wide picture angle makes this lens especially effective for shooting indoors, in restricted/limited space/areas. The lens has a built-in lens hood, three filters (Y48, 056, R60) and one plain glass (N). The type R focusing screen is recommended when this lens is used with the F2 Nikons for split-image focusing without image darkening. NOTE: Serial Number was believed to have been started with 321001 for 15mm f/5.6 Non-Ai ultrawide.
This lens was eventually has an update with an Ai version in 1977 and followed by an Ai-S lens version during the early '80
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Recommended links to understand more technical details related to the Nikkor F-mount and production Serial Number:
http://rick_oleson.tripod.com/index-153.html by: my friend, Rick Oleson
http://www.zi.ku.dk/personal/lhhansen/photo/fmount.htm by: Hansen, Lars Holst
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Co-developed with my web buddy, Rick Oleson® & Denmark, Creator of the Nikon Repair Group Mailing-List; A contributing effort to Michael Liu's Classic Nikon SLRs and Nikkor optic site.
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.