The Olympus AF-1 Twin (Infinity Twin in the US) of 1988 had a biaxial (twin-lens) system so the user could switch between a 35mm wide-angle lens and a 70mm telephoto lens at the touch of a button. It also inherited the weatherproof design developed for the Olympus AF-1 (Nurepika) that was also used on other models in the Olympus AF series The AF-1 Twin had moulded plastic lenses, which Olympus used for the first time in this weatherproof series after the development of technology to overcome moisture absorption and other issues. A Quartzdate model was available.

In 2006, Olympus issued a voluntary recall for this camera and several other models that have an apparent defect in the flash circuit, which can cause it to smoke and overheat when the camera is turned on.


  • Lens: Switchable between 35mm, 70mm
  • 35mm f.3.5 (3 elements, 3 groups) and 70mm f/6.3 (5 elements, 5 groups).
  • Autofocus
  • Auto-exposure, with shutter speeds of 1/15-1/750s.
  • Auto-flash.
  • Weatherproof.
  • DX decoding of 35mm film, ISO 50-3200.
  • Motordrive
  • XA-style lens protection.
  • Tripod socket.
  • Power: 3v Lithium CR123A or DL123A (2x)