canon has manufacture high-quality since it was founded in 1933SLR camera are purchased in two parts: The body and the lenses.Photographers who want a canon product must make the upfrontinvestment in the expensive camera body. Canon earns significantprofit from the sale of camera bodies and then earns a stream ofprofits from camera lenses. An owner of a Canon camera body canalso purchase lenses from other companies that produceCanon-compatible products. Would Canon be better off it there wereno other firm that made Canon-compatible lenses?