The Fujifilm GX680 is a professional medium format SLR camera system introduced in 1987. It uses 120/220 roll film to produce 6x8 cm images, and is notable for its modular design, allowing interchangeable lenses, film backs, and viewfinders. The GX680 features a unique bellows focusing system with front and rear standard movements, enabling tilt, shift, and swing adjustments for perspective and focus control. It offers electronic leaf shutter lenses with speeds up to 1/400 sec and supports both manual and aperture-priority auto exposure modes. The camera includes motorized film advance and an integrated rotating back for easy switching between portrait and landscape orientation. The GX680 system is highly regarded for studio and architectural photography due to its flexibility and image quality.