Hyperfocal distance is the closest focus distance at which depth of field extends to infinity. Focus the lens there, and everything from half that distance to the horizon is acceptably sharp. It is a foundational landscape technique, and it is where the Sigma 35mm f/1.4 DG DN Art produces its most argument-ending results. At f/8 on a full-frame sensor, the hyperfocal distance for a 35mm lens is approximately 4.6 meters using a 0.