The Petri GX-1 Super is a reflex camera. The 35mm camera is based on the “Cosina CT-1 Super” and was built by Cosina.
The Petri GX-1 Super offers the possibility of interchangeable lenses. Lenses with a Pentax K bayonet can be used. The model has no autofocus. The lens is focused manually.
For photography, the Petri GX-1 Super has an exposure meter. It can be used for films with a speed of ISO 25 to ISO 1600. The correct exposure is measured through the lens of the SLR camera.
The exposure time and aperture can be freely selected. The camera has a bulb setting. A more external flash can be used at the PC flash port or Hot Shoe for pictures.
Films for the Petri GX-1 Super
Which films are required for the Petri GX-1 Super? The camera is designed for 35mm films. This type of film is still being produced and can be processed by most photo laboratories without any problems. Possible films for the Petri GX-1 Super are the Kodak Ultramax 400* for color images and the Ilford HP5* for black and white shots.
The 35mm camera has a thread for a tripod. In addition, there is a connector for a cable release and a self-timer. The camera needs two LR44 batteries (eBay / Amazon*).
Production of the 35 mm camera was discontinued. Today you can find them only used. The prices for a used copy differ depending on the condition and functionality.
Technical datasheet
| Attribute | Specification |
|---|---|
| Type of Camera | Single lens reflex camera |
| Film format | 35mm |
| Picture format | 24 mm x 36 mm |
| Lens mount | Pentax K lens mount |
| Focus | Manual |
| Exposure times | 1/2000 second to 1 second, Bulb |
| Bulb mode | Yes |
| Light meter | Yes |
| Built-in flash | No |
| Flash Connection | Hot Shoe, PC-Flash |
| Flash sync speed | 1/125 s |
| Tripod mount | Yes |
| Cable release thread | Yes |
| Self-timer | Yes |
| Power supply | 2x LR44 batteries |
| Manufacturer | Cosina |
| Estimated value / Used price | 81,65 Euro 14513376671721442490394 Estimate based on used prices of 3 offers (possibly with different scope of delivery and/or condition). As of September 29, 2025 |
| Average used price in the year 2025 | 81,67 Euro (87.67 US-Dollar) |
FAQ about the Petri GX-1 Super
Is the Petri GX-1 Super an automatic camera?
No, the Petri GX-1 Super is a manual focus camera. You need to manually adjust the focus on the lens. It does, however, have a built-in light meter to help determine the correct exposure.
What kind of lenses can I use with this film camera?
The Petri GX-1 Super uses Pentax K-mount lenses. This means you can choose from a wide variety of lenses, but remember that you'll have to focus manually.
How do I take long exposure pictures with the Petri GX-1 Super?
The Petri GX-1 Super has a bulb setting. This allows you to keep the shutter open for as long as you hold the button down, perfect for night photography or light painting.
What type of film does the camera use?
This 35mm film camera uses standard 35mm film rolls. Many brands are compatible, including Kodak, Ilford, Lomography, and more, offering color and black and white options.
Does the camera need batteries and what type?
Yes, the Petri GX-1 Super requires two LR44 batteries for the light meter to function. These are readily available and inexpensive.