The B.I.G. Twin 4 is a medium format camera. It belongs to the group of twin lens reflex cameras. The camera was sold by Fotoversand Brenner from Weiden (Germany) and manufactured in China. The manufacturer also produced the Seagull TLRs.
The camera comes with a fixed focal length. It bears the name “Tessalith-4.” The focal length is 75 mm and the maximum aperture is f3.5. The B.I.G. Twin 4 does not have an autofocus. Therefore, you have to focus by hand using the shaft finder. The closest focusing distance is 1 meter.
The B.I.G. Twin 4 does not have a built-in light meter. The exposure time and aperture can be selected by the photographer. The shutter has a Bulb mode. In this mode, the shutter is open for a variable time. With the PC flash port and hot shoe, the use of a flash is possible.
Films for the B.I.G. Twin 4
The B.I.G. Twin 4 is loaded with medium format films. Medium format films are still being produced. A color film for the model would be the Fujifilm PRO 400H*. A possible film for black and white images is the Ilford Delta 100*. Color film is a color negative film and is developed using the C-41 process. The C-41 process is done by almost all photo labs.
The image ratio is 6 x 6. The film has to be rewound manually by the photographer. For this purpose, there is a crank on the side, which also makes the shutter ready for use.
The camera has a built-in self-timer and a connection option for a cable release. Additionally, there is a thread for a tripod. The camera does not need power to take pictures.
The B.I.G. Twin 4 can still be bought used. How the condition is and if it still works decides the value of the camera. At that time the new price was over 500 D-Mark. Today, the value is probably somewhere between 80 and 180 euros.
Technical datasheet
| Attribute | Specification |
|---|---|
| Type of Camera | Twin-lens reflex camera |
| Film format | 120 |
| Film transport | Manual |
| Picture format | 60 mm x 60 mm |
| Focal length | 75 mm |
| Widest aperture | f/3.5 |
| Minimum focus distance | 100 cm / 3.28 ft |
| Focus | Manual |
| Exposure times | 1/300 second to 1 second, Bulb |
| Bulb mode | Yes |
| Date imprinting | No |
| Built-in flash | No |
| Flash Connection | Hot Shoe, PC-Flash |
| Tripod mount | Yes |
| Cable release thread | Yes |
| Self-timer | Yes |
| Power supply | Not necessary |
| Company name of the brand | Foto Brenner |
| Manufacturer | Shanghai Camera Factory |
| Country of production | China |
| Estimated value / Used price | 325,67 Euro Estimate based on used prices of 3 offers (possibly with different scope of delivery and/or condition). As of June 15, 2026 |
FAQ about the B.I.G. Twin 4
Is the B.I.G. Twin 4 camera a simple camera to use?
It's a manual camera, so it requires some learning. There's no autofocus, and you need to set the aperture and shutter speed yourself. However, the basic functions are straightforward once you understand them.
What type of film does this twin lens reflex camera use?
It uses 120 roll film, a medium format film. Both color and black and white 120 films are readily available from various manufacturers. This gives you larger negatives than 35mm.
Can I use a flash with the camera?
Yes, the B.I.G. Twin 4 has both a hot shoe and a PC flash connection, so you can attach external flashes for extra lighting options. Remember to set the shutter speed accordingly.
How do I focus the image on the two-lens camera?
This camera doesn't have autofocus; you focus manually using the waist-level viewfinder. The closest focusing distance is 1 meter.
Does this model have a built-in light meter?
No, the B.I.G. Twin 4 doesn't have a built-in light meter. You'll need to use an external light meter or rely on your experience to determine the correct exposure settings.