In 1994, Contax introduced an apparent oddity: a new line of interchangeable-lens rangefinder cameras that did not use the established Leica-M or Leica-screw lens mounts. The new camera, the Contax G1, used the "G"-mount, an electronic autofocus mount. Critics were quick to accuse the camera of not being a "true" (mechanical) rangefinder, since it used autofocus and electronically-linked mechanisms. But the AF mechanism in the G1, and later the G2 (introduced in 1996), does indeed use a twin-window system much like that of the older mechanical rangefinders—only in electronic form. An advantage of the Contax G finders over other rangefinder cameras is the fact that with lenses from 28mm to 90mm they always show the correct view (zoom rangefinders). The same is true for close focusing, as they also feature parallax correction. Some users reported focusing problems with the Contax G1 at close distances with the 90mm Sonnar and Contax introduced the successor to the Contax G1, the G2, only two years after its introduction in 1996.
