A design made to last. The Sigma BF is the first camera in history* to feature a true unibody design, with each camera carved from a single, solid block of aluminum over the course of 7 hours. Simplicity does not mean limitation. To learn more about the Sigma BF visit sigmaphoto.com *as of February, 2025 by SIGMA #SigmaBF #MadeinAizuJapan #ShotonBF