Fuji GS645
The Fuji GS645 series was a lineup of cameras manufactured by Fujifilm of Japan. The lineup included several cameras, differentiated by their focal length and by some cosmetic features: The GS645, GS645W, and GS645S. The cameras, released between March 1983 and October 1984, are medium format and accept either 120 or 220 film. The cameras take photographs in the 6 × 4.5 frame size in portrait orientation. History
The initial model in the lineup, the GS645, is designed with a bellows system that has been compared as returning to Fujifilm's original roots in bellows-style medium format camera design. A similar camera lineup released soon after, the Fuji GA645 series, also has a rangefinder design but offers autofocus. Models
There are three models in the GS645 line. The first camera introduced was the Fuji GS645. This camera is a folding camera with bellows, and a normal EBC Fujinon S 75mm 3.4 lens. The Fuji GS645W was released soon after, which removed the bellows system in favor of a wider, fixed-in-place  45mm 5.6 lens. A third version, the Fuji GS645S, was later released with a 60mm 4.0 lens, designed for use photographing family settings, which has been compared to the Holga 120 because of its size and focal length. The GS645S includes a crowbar around the lens to protect from damage. All three models take photographs in portrait orientation, have a rangefinder focusing mechanism, and include a built-in battery powered light meter. They also can accept either 120 or 220 film. All models have a fully mechanical operation, meaning they can be used without a battery. The cameras have received some criticism for their fragility, though their form factor and the quality of the lenses has received praise. Specifications

References

Fujifilm cameras
Fujifilm rangefinder cameras
Rangefinder cameras
Cameras by format
Cameras introduced in 1983