2015-12-27

Nikonos I


Patent drawing from US3,135,183 (Jan De Wouters D'Oplinter)
I already described how I got my Nikonos. As promised, today a few more details about the camera itself. It is truly the most rugged 135 film camera that I own (maybe even ever build), and it's really fun to take pictures with it (also above the water!). Two rolls of film I've shot already.
What fascinates me most is the straight forward way it was designed for its purpose as an underwater camera. All details seemed to be solved in an optimal way. First of all, of course, the pressure housing made of aluminum, in which the actual camera mechanism is put into it. Two O-rings seal the whole, one between the upper cover and the housing, the other toward the lens. The attached lens additionally clamps this connection and locks it. In addition, there is the combined shutter release and quick-release lever, which really deserves its name. Even under water using only one hand the camera can be operated. A large and bright viewfinder, and the wheels for distance and aperture on the lens round off the whole thing.



Initially, I wondered about the only 5 shutter speeds (1/30 to 1/500 sec). But here shows that Jan De Wouters and later the Nikon engineers knew what was really needed. Underwater you will seldom bring a tripod (or have the opportunity to put it somewhere). Therefore, no long shutter speeds. Moreover, it is rarely this bright that you'd need a 1/1000 sec (the original Calypso camera still had it).
I skip here to repeat more information about the history of the camera. This you can read elsewhere (see the links below). My camera has the serial number 909 505, this translates to the second year (1964) of production. It also bears the apparently rare EP diamond on the rewind button. Really, a lucky strike. Unfortunately, only the Nikonos label under the lens is missing ...

Data Sheet Underwater camera with exchangeable lenses
Lens W-Nikkor 35mm f/2.5 (6 elements in 4 groups), exchangeable. Nikonos mount, see list of available lenses.
Shutter vertical metal blade focal plane shutter, 1/30 sec - 1/500 sec, and B.
Metering no
Focussing manual with screw at the lens, no focusing aid
Viewfinder optical viewfinder with 35 mm frame and parallax marks
Flash optional, connected through a special adapter, 1/60 sec sync.
Film advance manual with quick release lever, which also is shutter release button
misc. Features accessory shoe, shutter release lock, frame counter, depth of field mechanism on the lens. Waterproof up to 50 m depth.
Size, Weight about 98x130x65 mm, 730 g (with 35 mm lens)
Battery no
Year(s) of Production 04/1963 - 03/1969 (30675 units build)
Original Price, Today's Value 28500 Yen (1963, = US$80),  about US$300
Links Nikon History, Nico Van Dijk, Mir.com, Nippon Kogaku Klub, Calypsonikonos.com (a lot of additional links), Manual (Nikonos II), US-Patent, EP-Patents

Keine Kommentare:

Kommentar veröffentlichen