A digital camera body from Sigma, model BF.
The Sigma BF is a compact full-frame mirrorless camera from Sigma featuring a 61-megapixel BSI back-illuminated CMOS sensor and L-Mount bayonet. Part of Sigma's fp-successor line, the BF emphasises a minimal, compact form factor for a full-frame camera while delivering high resolution for studio and travel photography. 'BF' stands for 'Beautiful Foveon' in spirit though the sensor is CMOS rather than the Foveon X3.
61MP BSI full-frame CMOS sensor, L-Mount bayonet (Sigma/Panasonic/Leica L-Mount Alliance), compact body design, 4K video recording, USB-C charging, electronic shutter.
The Sigma BF targets photographers who want maximum resolution in a compact full-frame package compatible with the broad L-Mount lens ecosystem from Sigma, Panasonic, and Leica. Its 61MP resolution enables extensive cropping and large-format output. The minimal body design sacrifices grip and physical controls for compactness.
Verify sensor condition at full 61MP resolution. Test L-Mount lens communication across multiple L-Mount lenses. Check body construction and controls. Confirm USB-C charging and data transfer function. Test 4K video recording modes.