Difference between revisions of "Nikonos IV-A"
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While the [[Nikon#Underwater|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". | While the [[Nikon#Underwater|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". | ||
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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. | 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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==Links== | ==Links== | ||
*[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] | ||
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Revision as of 03:41, 19 December 2019
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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.
Links
