Fuji's rigid 6x4.5 rangefinder — the GS645S, fixed lens, leaf shutter, coupled RF, meter, 1984.
The Fujifilm GS645S is a fixed-lens rigid-body medium-format rangefinder released in 1984 as a variant of the GS645 line. Rather than folding, it uses a fixed rigid lens with a protective bar around the front, giving a more rugged 6x4.5 rangefinder aimed at reportage-style shooting.
This is a rigid-body medium-format rangefinder producing nominal 6x4.5 frames on 120 or 220 roll film. It has a fixed wide-normal lens with a leaf shutter in the lens rather than a folding bellows, focusing by coupled rangefinder, and a built-in light meter. The rigid design removes the bellows of the folding GS645.
It suits travel, documentary and street photographers who want a durable medium-format rangefinder without the delicacy of a folding body. The protective front bar and fixed lens make it hard-wearing for location work, while the 6x4.5 negative keeps film costs and body size moderate for the format.
For a used purchase, verify rangefinder patch alignment and contrast and test the leaf shutter across its speeds for accuracy. Confirm the meter responds and inspect the fixed lens for haze and fungus. Check the light seals, film-advance and counter, and examine the protective bar and body for impact damage from field use.