Miranda's M42 screw-mount SLR — the dx-3, TTL metered, 1975.
The Miranda dx-3 was a 35mm film SLR from around 1975 and, unlike earlier Miranda bodies, it used the M42 screw mount rather than the proprietary Miranda mount. It appeared near the end of the original Miranda company's life, and the name was later applied to unrelated products by other owners of the brand.
It is a single-lens-reflex camera for 35mm film on the M42 screw mount. The dx-3 used TTL metering and a focal-plane shutter, operated in metered manual. As an M42 body it accepts the very large range of screw-mount lenses made by many manufacturers, which broadens its usefulness considerably.
It suits users who want a Miranda-badged body that can take common M42 lenses rather than the rare proprietary Miranda glass. The universal screw mount is its main practical advantage, making lenses easy to source compared with the earlier bodies.
On the used market the dx-3 is uncommon but its M42 mount is a real benefit, as screw-mount lenses are plentiful and cheap. Check the foam seals and mirror-damper foam, confirm the shutter fires at all speeds, and test the meter with an appropriate battery. Inspect advance, rewind and screen; while the body itself is niche, the M42 lens supply eases ownership.