http://basepath.com/Photography/MinoltaSR1.php
ZITATMinolta introduced its first SLR, the SR-2, at the same 1959 Philadelphia show where Nikon introduced its F and Canon introduced its Canonflex, but Minolta didn't quite bring off what its rivals did, because the SR-2 didn't have an instant-reopen diaphragm. Minolta advertised it (see below) as being automatic, which it was in the sense that it reopened by itself, but not until you wound the shutter and advanced the film.
The SR-2 was too expensive at $250, so just a few months later Minolta came out with the SR-1 at only $170, identical except for a slower fastest shutter speed and a slower standard lens. In the ad below, you can see that Minolta said it was "[f]or the professional who won't spend $250 or more for an automatic single lens reflex."
Considering the small differences, the real purpose of the inflated $250 price tag on the SR-2 was to sell more SR-1 as —it made $170 for nearly the same camera seem like an incredible bargain. That their first SLR was called the SR-2 was a tip-off that the SR-1 was planned from the start. Minolta knew how to make cameras and lenses, and they knew how to market them, too. (Canon didn't.)
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So, so... ;-)
ZITATMinolta's first SLR, the SR-2, was introduced at Master Photo Dealers and Finishers Association show in March 1959 in Philadelphia—the same show where the Canonflex and Nikon F were introduced. A cheaper SR-1 followed a few months later; obviously, they were planning the SR-1 when they decided to call the first one the SR-2.[/quote]
Zur SR-1 siehe auch: http://www.mi-fo.de/forum/viewtopic.php?t=25614