Canonet G-III QL17
Encyclopedia
The Canonet G-III QL17 is a coupled-rangefinder
, leaf-shuttered, fixed-focal-length 35 mm
camera first manufactured by Canon in 1972. It features fully shutter-priority automatic exposure and fully manual shooting modes.
The Canonet G-III is the third generation of Canonet
, following the original Canonet and the New Canonet.
The G-III features a 40 mm 1.7 with six elements in four groups. The integrated lightmeter provides shutter priority and manual modes. The sensor is located on the forward part of the lens
, which allows use of filters without manual compensation of exposure. The Canonet can use standard flashes, or the Canonlite D which was custom-designed for the Canonet.
Furthermore, the mercury battery has a life span of several years, compared to a few months for the alkaline battery. This degree of incorrect exposure is tolerable with negative colour or black-and-white films, but is more noticeable with slide films.
Many users will use a 1.4-volt hearing aid battery or adapters with Schottky diodes that allow use of SR-44 battery with better results. A zinc-air battery can also be used.
Rangefinder camera
A rangefinder camera is a camera fitted with a rangefinder: a range-finding focusing mechanism allowing the photographer to measure the subject distance and take photographs that are in sharp focus...
, leaf-shuttered, fixed-focal-length 35 mm
135 film
The term 135 was introduced by Kodak in 1934 as a designation for cartridge film wide, specifically for still photography. It quickly grew in popularity, surpassing 120 film by the late 1960s to become the most popular photographic film format...
camera first manufactured by Canon in 1972. It features fully shutter-priority automatic exposure and fully manual shooting modes.
The Canonet G-III is the third generation of Canonet
Canonet
The Canonets were a series of rangefinder cameras made by Canon from the early 1960s to the early 1980s. They were aimed at enthusiasts on a budget and more discerning point and shoot photographers.- Models :The models included* Canon Canonet...
, following the original Canonet and the New Canonet.
The G-III features a 40 mm 1.7 with six elements in four groups. The integrated lightmeter provides shutter priority and manual modes. The sensor is located on the forward part of the lens
Lens (optics)
A lens is an optical device with perfect or approximate axial symmetry which transmits and refracts light, converging or diverging the beam. A simple lens consists of a single optical element...
, which allows use of filters without manual compensation of exposure. The Canonet can use standard flashes, or the Canonlite D which was custom-designed for the Canonet.
Exposure meter
The exposure meter uses a PX625 mercury battery, which is now discontinued. The alkaline equivalent can be used, but the different voltage, different discharge curve, and absence of voltage regulation circuit cause incorrect metering that results in between 1.5-f-stop overexposure at the beginning of the life of the alkaline battery and 1.5-f-stop underexposure at the end.Furthermore, the mercury battery has a life span of several years, compared to a few months for the alkaline battery. This degree of incorrect exposure is tolerable with negative colour or black-and-white films, but is more noticeable with slide films.
Many users will use a 1.4-volt hearing aid battery or adapters with Schottky diodes that allow use of SR-44 battery with better results. A zinc-air battery can also be used.