The Cosina CS-1 is a single lens reflex camera. The 35mm camera was produced by Cosina.
The lens of the Cosina CS-1 is interchangeable. A Pentax K bayonet was installed for this purpose. The Cosina CS-1 has no autofocus. It is manually focused.
The Cosina CS-1 has an integrated light meter. It can set the correct exposure for 35mm films with a sensitivity of ISO 25 to ISO 3200. The exposure measurement is performed through the lens. The desired aperture and exposure time can be set by the user.
The Cosina CS-1 has a bulb mode, for example for long exposures. A flash unit can be used via the hot shoe or the PC flash connection.
Films for the Cosina CS-1
The 35mm format is the most common film format. Therefore, some manufacturers still produce for this format. For black-and-white 35mm shots, the Ilford Delta 100* a good choice. For color images you can use the Kodak Ultramax 400*.
The development process for the color film is the C-41 process. C-41 films are developed by almost all photo laboratories.
For example, a normal 35mm film can hold at this size a least 36 pictures. The film must be winded manually by the photographer.
In the Cosina CS-1 is a thread for a tripod built-in. In addition, there is a connector for a cable release and a self-timer. The dimensions of the Cosina CS-1 are 13,65 x 8,32 x 5,1 cm. It brings 530 grams on the scales. The power supply for the 35mm camera is provided by two S-76 1.5V batteries (eBay / Amazon*).
The 35mm camera can today only found in used condition. The price you pay for a used copy of the Cosina CS-1 depends 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 |
| Viewfinder | Pentaprism finder |
| Exposure times | 1/1000 second to 4 seconds, Bulb |
| Bulb mode | Yes |
| Light meter | Yes |
| Built-in flash | No |
| Flash Connection | Hot Shoe, PC-Flash |
| Flash sync speed | 1/60 s |
| Tripod mount | Yes |
| Cable release thread | Yes |
| Self-timer | Yes |
| Power supply | 2x S76 batteries |
| Size | 13,65 x 8,32 x 5,1 cm |
| Dimensions in inches | 5.37 x 3.28 x 2.01 inches |
| Weight | 530 Grams |
| Estimated value / Used price | 81,67 Euro Estimate based on used prices of 3 offers (possibly with different scope of delivery and/or condition). As of June 15, 2026 |
| Average used price in the year 2024 | 48,48 Euro (51.96 US-Dollar) |
| Average used price in the year 2025 | 58,83 Euro (62.78 US-Dollar) |
FAQ about the Cosina CS-1
Is the Cosina CS-1 camera automatic or manual focus?
The Cosina CS-1 uses manual focus. This means you have to adjust the focus ring on the lens yourself to get sharp images. There is no autofocus system built in.
What kind of film does this 35mm camera use?
This camera uses standard 35mm film rolls, both color and black and white. It's a common film size, so finding it shouldn't be a problem.
How do I take long exposure pictures with the camera?
The Cosina CS-1 has a bulb mode for long exposures. This allows you to keep the shutter open as long as you need, useful for night photography or capturing light trails.
Does the camera have a built-in light meter?
Yes, it has a built-in light meter to help determine the correct exposure settings. It measures from EV 2 to EV 19 at ISO 100. You then manually set the aperture and shutter speed.
Can I use a flash with the camera?
Yes, you can attach a flash using the hot shoe or PC flash connection. This allows you to use additional lighting for better images in low-light conditions.