The Canon Prima AS-1 is an underwater camera. It was manufactured by Canon and presented in the 90s. The 35mm camera was also sold as the Canon Autoboy D5, Sure Shot A-1 and WP-1 and was the smallest and lightest underwater camera at the time of its introduction.
The camera comes with a fixed focal length lens. The lens is named “Canon Lens 32mm 1:3.5.” The focal length is 32mm. The largest aperture is f3.5. There is no need to focus manually with the Canon Prima AS-1. The camera is equipped with autofocus. The minimum distance to the subject in macro mode is 45 cm.
The camera has a built-in light meter. The light meter has auto exposure and sets aperture and shutter speed automatically. In low light conditions, the built-in flash can be used. If desired, the flash can be turned off.
Films for the Canon Prima AS-1
Needed for the Canon Prima AS-1 photo films. Used are films for the 35mm format. This type of films is still produced and can be processed by most photo labs without any problems.
Possible films for the Canon Prima AS-1 are the Kodak Ultramax 400* and the Ilford Delta 100*. The development of the color film is the C-41 process. This development process is performed by all photo labs that offer development of 35mm film. The film is automatically transported by the camera.
The dimensions of the 35mm camera are 13.3 x 8.8 x 5.6 cm. At the same time weighs 385 grams. The camera is tight to a depth of five meters and has a self-timer.
For power supply is a CR123A battery (eBay / Amazon*).
The 35mm camera can only be found used. The price of a Canon Prima AS-1 depends on its condition and functionality.
Technical datasheet
| Attribute | Specification |
|---|---|
| Type of Camera | Underwater camera |
| Film format | 35mm |
| Film transport | Automatic |
| Film transport mechanism | Motor |
| Picture format | 24 mm x 36 mm |
| Focal length | 32 mm |
| Widest aperture | f/3.5 |
| Minimum focus distance | 45 cm / 1.476 ft |
| Focus | Autofocus |
| Exposure times | 1/250 second to 2 seconds |
| Light meter | Yes |
| Exposure modes | Program automatic |
| Manual exposure settings | No |
| Auto DX (Film sensitivity) | No |
| Date imprinting | No |
| Flash | Integrated flash |
| Cable release thread | No |
| Self-timer | Yes |
| Power supply | 1x CR123A battery |
| Size | 13,3 x 8,8 x 5,6 cm |
| Dimensions in inches | 5.24 x 3.46 x 2.20 inches |
| Weight | 385 Grams |
| Estimated value / Used price | 174,58 Euro Estimate based on used prices of 12 offers (possibly with different scope of delivery and/or condition). As of May 18, 2026 |
| Average used price in the year 2023 | 167,89 Euro (180.76 US-Dollar) |
| Average used price in the year 2024 | 168,42 Euro (181.84 US-Dollar) |
| Average used price in the year 2025 | 158,21 Euro (171.02 US-Dollar) |
FAQ about the Canon Prima AS-1
Is this camera good for underwater photography?
Yes, the Canon Prima AS-1 is specifically designed as an underwater camera. It's waterproof up to 5 meters, making it ideal for shallow-water shots. It was even known for being the smallest and lightest underwater camera of its time.
How does the camera focus?
The Canon Prima AS-1 has autofocus, so you don't need to manually adjust the focus. It automatically focuses on your subject. The minimum focusing distance in macro mode is 45cm.
What kind of film does this compact camera use?
It uses standard 35mm film, which is still readily available. Popular choices include Kodak Ultramax 400 and Ilford Delta 100. The camera automatically transports the film.
Does the underwater camera have a flash?
Yes, it has a built-in flash for use in low-light conditions. The flash can be turned on or off as needed, giving you control over your lighting.
What are the dimensions and weight of the device?
The Canon Prima AS-1 measures 13.3 x 8.8 x 5.6 cm and weighs 385 grams. It's a relatively compact and lightweight camera, making it easy to carry and use.