Regula Super
The Regula Super is a 35mm rangefinder camera with built-in uncoupled light meter and interchangeable lenses, built by King for their Regula range, from 1959. The viewfinder has bright lines for 90, 50 and 135mm lenses, selectable by a switch on the top plate.
The lenses carry the aperture control ring; the Quinon lens has mechanically-moved depth-of-field pointers, along with a ring graduated in flash guide numbers, this is set against a film speed scale and allows reading off of apertures along the distance ring. The match-needle meter produces an Exposure Value, which can be set on the aperture ring, which is then coupled to the shutter ring. The lenses use a bayonet mount, which has the coupling to link the shutter and aperture rings.