The Olympus AF-1 Twin (Infinity Twin in the US) of 1988 has a biaxial (two-lens) system so the user can switch between a 35mm wide-angle lens and a 70mm telephoto lens at the touch of a button. It also has the weatherproof design used on the other models in the Olympus AF series. The AF-1 Twin is the first model in the AF series with moulded plastic lenses; Olympus had to overcome moisture absorption (for a splashproof camera) and other issues.
Specifications:
- Lens: Zuiko Switchable between 35mm, f/3.6 (3 elements, 3 groups) and 70mm, f/6.3 (5 elements, 5 groups)
- Film speed settings: DX decoding of 35mm film, ISO 50-3200
- Shutter: Auto-exposure, with shutter speeds of 1/15-1/750s
- Aperture: Automatic from f/2.8 to f/13.5
- Film Winding: Automatic
- Built-in flash
- Waterproof
- Clamshell lens protection
- Tripod socket