Canon F-1

The Canon F-1 is an all-mechanical 35mm SLR camera designed to compete in the professional market of the 1970s. It features a titanium foil shutter and a highly durable body capable of withstanding 100,000 cycles. As a modular system, it allows for various viewfinders and motor drives to be attached, providing versatility for photojournalists and studio photographers alike. For used units, the mechanical shutter timings are the most critical point of inspection. SDS checks for 'shutter squeak'—a common issue in older Canon SLRs—and ensures the light meter is responsive, though it requires a 1.35v mercury battery or modern equivalent. The condition of the internal prisms and the smoothness of the film advance are also carefully assessed.