The olympus 8x40 dps i binoculars have one of the widest fields of view in their class making them ideal for tracking fast moving subjects such as birds in flight or deer on the move the built in dioptric correction adjusts to individual eyesight and the large centre focus knob is close to hand for fast and easy focusing these traditionally designed binoculars are finished in a sure grip rubber coating and feature high quality aspherical lenses for a bright clear image with minimal distortion