Canon's Canonet G-III QL17 — cult 40mm f/1.7 35mm rangefinder, shutter-priority AE, CdS meter, 1972.
The Canon Canonet G-III QL17 was the 1972 final development of the QL17 within Canon's long-running Canonet line of fixed-lens 35mm rangefinders. It is the most sought-after of the Canonets among today's buyers, and its combination of a fast 40mm f/1.7 lens, compact metal body and shutter-priority automation has made it a cult classic that commands a premium over its Canonet siblings.
This is a 35mm fixed-lens rangefinder that focuses by a coupled rangefinder rather than autofocus or zone focus, with a permanently fitted 40mm f/1.7 lens and no interchangeable mount. It uses a leaf shutter in the lens and offers shutter-priority automatic exposure alongside manual control, metered by a CdS cell in the filter ring. It also carries Canon's QL Quick Load film-threading system for fast loading.
The G-III QL17 suits street, documentary, reportage, travel and general shooting, pairing a bright fixed f/1.7 lens with quiet leaf-shutter operation in a pocketable metal body. The shutter-priority mode makes it quick to shoot, while full manual control and rangefinder focusing give precision when wanted. Its combination of speed, size and image quality drives its lasting popularity.
On the used market, check the foam light seals, which perish with age. Inspect the fixed f/1.7 lens for haze, fungus and separation, since it cannot be replaced. Test the coupled rangefinder patch for contrast and alignment. The CdS meter was designed around a 1.35V mercury cell, now banned, so confirm the meter works and account for voltage when using a modern replacement battery. Check the QL loading, film advance and rewind, and look for battery-door corrosion.