Difference between revisions of "Nikonos IV-A"
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==Links== | ==Links== | ||
| + | *[https://www.butkus.org/chinon/nikon/nikonos_iv-a/nikonos_iv-a.htm Nikonos IV-A user manual] at [https://www.butkus.org/chinon/ Butkus.org] | ||
*[http://imaging.nikon.com/history/chronicle/history-nikonos/index.htm Evolution of Nikonos] from [http://www.nikon.com/index.htm Nikon.com] | *[http://imaging.nikon.com/history/chronicle/history-nikonos/index.htm Evolution of Nikonos] from [http://www.nikon.com/index.htm Nikon.com] | ||
Latest revision as of 07:14, 6 December 2021
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| image by Shoji Kimura (Image rights) |
While the earlier Nikonos series of underwater cameras had been evolutionary refinements on the original French Calypso, the 1980 Nikonos IV-A was a design originating entirely from Nikon. Where the models up through the Nikonos III had been entirely mechanical cameras, the IV-A added TTL light metering and aperture-priority autoexposure via an electronically-timed shutter. The only manual exposure option was a mechanically-timed speed of 1/90th second, or "B".
The camera body was also greatly redesigned, offering a more conventional shutter release and hinged back. The viewfinder included LED display of exposure and flash status.
The Nikonos V followed in 1984, offering manually-selected shutter speeds and TTL control of flash exposure, making the IV-A a comparatively less desirable model today.
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