The Guest G4000 is a SLR camera, developed by Cosina and introduced in the 90s. The model was sold by Cosina itself under the name “Cosina C1“.
The lenses of the Guest G4000 can be changed. This is possible trough the Pentax K lens mount. There is no autofocus with the 35mm camera. You have to focus manually on the subject.
The built-in light meter makes it easier to measure exposure. The exposure meter was designed for films with ISO value between 25 and 3200. The correct exposure is measured through the lens of the SLR camera. The aperture and shutter speed can be freely selected by the photographer.
The camera has a bulb mode. The shutter can remain open for a variable time. An external flash can be used with the 35mm camera via hot shoe. The 35mm camera has a connector for a cable release. There is also a thread for mounting a tripod.
The camera weighs 370 grams and the dimensions are 13,8 x 8,8 x 5,8 cm. The power supply for the 35mm camera is provided by two LR44 batteries (eBay / Amazon*).
Films for the Guest G4000
The Guest G4000 exposes cartridges with 35mm film. 35mm films are still easy to get today and are developed by most photo laboratories. Possible films for the Guest G4000 are the Kodak Gold 200* for color pictures and the AgfaPhoto APX 100* for black and white photos.
Technical datasheet
| Attribute | Specification |
|---|---|
| Type of Camera | Single lens reflex camera |
| Film format | 35mm |
| Film transport | Manual |
| 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 |
| Supported film speeds | ISO 25 to 3200 |
| Exposure modes | Manual mode |
| Auto DX (Film sensitivity) | No |
| Built-in flash | No |
| Flash Connection | Hot Shoe |
| Flash sync speed | 1/125 s |
| Tripod mount | Yes |
| Cable release thread | Yes |
| Self-timer | No |
| Power supply | 2x LR44 batteries |
| Size | 13,8 x 8,8 x 5,8 cm |
| Dimensions in inches | 5.43 x 3.46 x 2.28 inches |
| Weight | 370 Grams |
| Manufacturer | Cosina |
FAQ about the Guest G4000
Is the Guest G4000 a camera with autofocus?
No, the Guest G4000 lacks autofocus. You need to manually focus on your subject. This is a common feature of older cameras.
What kind of lenses can I use with this camera?
The Guest G4000 uses interchangeable lenses via a Pentax K bayonet mount. This allows for a variety of lens options.
How do I control the exposure on this camera?
The camera has a built-in light meter to help determine exposure. You manually set the aperture and shutter speed for your desired exposure.
What type of film does the camera use and where can I get it?
It uses standard 35mm film, readily available online and at many photo retailers. Both color and black and white films are compatible.
What is the power source for the Cosina C1?
The Cosina C1 operates on two LR44 batteries, which are inexpensive and easily replaceable. They're readily available online and in many stores.