Yashica couldn't just let Minox have all the fun in the subminiature game. When it comes to 8x11mm film cameras, Minox will always be the top dog, but Yashica did make some waves of their own with their line of Atoron cameras.
The Yashica Atoron Electro was an electronic update to their earlier, mechanical Atoron camera. Released in the early 1970s, the Atoron Electro looked and felt much like its predecessors, though it sure did not sound like one. Gone was the mouse-squeak-shutter-squeal of the original Atoron, the Electro is much, much quieter. Also missing from the Atoron Electro are the all manual exposure controls. Yashica installed a CdS meter in the Atoron Electro and let the meter take over all exposure responsibilities. All the user has to do is load the film, correctly set the ASA setting (choosing between 16, 25, 50, 100 and 200), and the camera's meter will pick the appropriate shutter speed and aperture. The Atoron Electro is able to expose shutter speeds as long as 8 seconds at f/2.8 up to 1/350th at f/13. Just be sure to keep a spare battery handy, the camera doesn't do much of anything without a good battery in it.
Focusing is still done manually with the Atoron Electro. A small knob on the bottom of the camera allows the setting of focus and, while the viewfinder does adjust for parallax, there are no focus aides to assist one's guesstimation of the distance at which the lens should be set.
za/sd
Yashica Atoron Electro
The subminiature format enjoyed a wave of popularity in Japan that began in the 1950s and extended well into the 1970s. A number of Japanese companies produced various subminiature cameras, mostly of the 16mm variety. Even Yashica initially introduced a 16mm camera, modeled after the Minolta 16mm cameras, but when those early models failed to sell, Yashica instead produced a camera built around the Minox cassette - the Atoron. The Yashica Atoron was a hit and, throughout the 1960s, Yashica manufactured and sold so many of these cameras that they were ready to update the design by 1970.
Enter the Atoron Electro.
At the time, the Electro offered some significant upgrades. First off, the Atoron Electro had a focusing lens. Unlike their Minox counterpart, early Atorons were fixed focus, relying on depth of field to get all subject matter sharp. The Atoron Electro now allowed the user to set their own focus. The Atoron Electro also swapped out the earlier selenium cell meter for a CdS meter. Both the Atoron Electro's shutter and light meter now required battery power to operate, but exposure was set automatically by the camera. In regard to this latter point, the tradeoff is that the Atoron Electro does not have any manual exposure settings. So if the meter dies, the camera is a goner as well.
That was the story with this particular Atoron Electro. Its meter was shot, and the rest of the camera became merely a prop for a Museum Exhibit.