Omega is the name of various medium-format cameras and enlargers. The Simmon Brothers, known for their line of enlargers, built the original Simmon Omega cameras in the United States. These rangefinder cameras took 6x7cm photographs on 120 roll film. Later, Konica manufactured the Koni Omega line. The last models, including the Rapid Omega 200, came from Mamiya. This line had interchangeable lenses, including a 58 (or 60) mm wide-angle, a 90 mm normal lens, a 135 mm portrait lens, and a 180 mm telephoto. A close-up adapter was popular with wedding photographers.