Canonet G-III - Camera CANON - Free user manual and instructions
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| Product Type | 35mm Rangefinder Camera |
| Brand | Canon |
| Model | Canonet G-III |
| Lens Type | Fixed, non-interchangeable |
| Focal Length | 40mm |
| Maximum Aperture | f/1.7 |
| Shutter Type | Copal electronic leaf shutter |
| Exposure Control | Aperture-priority automatic |
| Light Meter | CdS cell (Cadmium Sulfide) |
| Film Format | 35mm (135) film cassette |
| Film Speed Range | ASA 25–800 |
| Viewfinder | Rangefinder with parallax correction |
| Focusing | Manual rangefinder focusing |
| Self-Timer | Mechanical, approx. 10-second delay |
| Flash Connection | X-sync hot shoe and PC terminal |
| Filter Thread | 48mm |
| Power Source | 1.35V mercury battery (PX625 or equivalent) |
| Dimensions (W×H×D) | Approx. 128 × 80 × 66 mm (5.0 × 3.1 × 2.6 in) |
| Weight | Approx. 690 g (24.3 oz) without battery |
| Construction | Metal body with chrome or black finish |
| Repairability | Serviceable by specialized technicians; light seals and leather kits available |
| General Information | Vintage 1970s compact camera, known for excellent lens and accurate auto-exposure |
Frequently Asked Questions - Canonet G-III CANON
What type of film does the Canonet G-III use?
The Canonet G-III uses 35mm film in standard 135 cartridges. It supports film speeds from ASA 25 to 800, allowing you to use a wide range of black-and-white and color films.
What battery does the Canonet G-III require?
The camera requires a 1.35V mercury battery (type PX625 or equivalent) to power its exposure meter. Because mercury batteries are no longer sold, you can use a modern 1.5V substitute with a voltage-reducing adapter, or install a zinc-air battery such as the WeinCell MRB625.
How do I set the film speed (ISO/ASA) on the Canonet G-III?
To set the film speed, rotate the ASA dial located on the camera top (around the film rewind knob) until the mark aligns with the film speed you are using. The range is from ASA 25 to 800. Make sure to set this every time you load a new roll of film.
How does the exposure system work on the Canonet G-III?
The Canonet G-III uses an aperture-priority automatic exposure system. You select the desired aperture on the lens, and the camera's Cds light meter automatically sets the appropriate shutter speed (stepless from about 1/8s to 1/500s). The viewfinder shows the selected speed with a needle.
Can I use modern batteries in the Canonet G-III?
Yes, you can, but with caution. Modern alkaline 1.5V batteries (such as LR44) can cause inaccuracies because the meter is calibrated for 1.35V. Use a silver-oxide cell with a 0.4V adapter or a zinc-air cell that provides 1.35V. Always test exposure against a known-good camera or light meter.
How do I focus the Canonet G-III?
Focusing is done manually using the split-image or microprism rangefinder in the viewfinder. Turn the focusing ring on the lens until the two images in the center align, and the focus is set. The camera also has distance indications for scale focusing.
What is the shutter speed range of the Canonet G-III?
In automatic mode, the Copal electronic shutter operates steplessly from approximately 1/8 second to 1/500 second. In manual mode, you can set speeds fixed at 1/8s, 1/15s, 1/30s, 1/60s, 1/125s, 1/250s, and 1/500s, plus Bulb (B) for long exposures.
How do I clean the lens on the Canonet G-III?
Use a soft brush or air blower to remove dust, then gently wipe with a microfiber cloth or lens tissue. If smudges remain, apply a drop of lens cleaning solution to the cloth (not directly on glass). Never use harsh solvents or abrasive materials.
Is the lens interchangeable?
No. The Canonet G-III has a fixed lens mounted permanently to the camera body. This keeps the camera compact and alignes the rangefinder precisely, but limits lens flexibility. The fixed Canon 40mm f/1.7 is famous for its sharpness and is well suited for general photography.
What is the value of the Canonet G-III today?
The Canon Canonet G-III is a collectable vintage camera typically valued between $100 and $250 depending on condition, working status, and accessories. A fully serviced example or one with the original case and manual may fetch more. It remains popular among classic camera enthusiasts.
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USER MANUAL Canonet G-III CANON
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Product information
Brand : CANON
Model : Canonet G-III
Category : Camera