Mamiya's M42 SLR — the DSX 1000, TTL averaging and spot metering, mechanical shutter, 1974.
The Mamiya DSX 1000 was a 35mm film SLR made by Mamiya on the M42 screw lens mount. It was the higher member of Mamiya's mid-1970s DSX pair, offering a faster top shutter speed than the DSX 500 as the model number suggests. It provided TTL metering on the widely supported M42 standard and was aimed at general users and students wanting an affordable, capable interchangeable-lens camera.
It is a 35mm single-lens-reflex camera on the M42 screw mount, accepting the broad range of M42 lenses from many manufacturers. The horizontal-travel cloth focal-plane shutter is mechanically timed and reaches a faster maximum speed than the 500. Metering is TTL and the DSX bodies offered both averaging and spot patterns, with match-needle exposure setting in the finder. Because the shutter is mechanical, the camera fires without a battery, which is needed only to power the meter.
This body suits general, student and beginner use as well as travel where a straightforward, durable manual SLR is wanted. The M42 mount opens up a wide and inexpensive lens selection, and the switchable averaging and spot metering with match-needle display makes it flexible for learning exposure while keeping operation simple and mechanical.
When buying used, check the mechanical shutter at all speeds for accuracy and capping. Test the meter and confirm the battery type, bearing in mind cameras of this age were often built for mercury cells, so check how the meter reads. Inspect foam light seals and mirror-damper foam for perishing, look for prism haze in the finder, and test film advance and rewind. The shutter fires with a dead meter battery, but the meter needs power; verify M42 lenses thread and stop down properly.