The Panasonic Leica DG Vario-Elmar lens has a maximum focal length of 400mm and minimum focal length of 100mm. Its comparable to a 35mm focal length of 200-800mm. It has an aperture of F/4-6.3. and a micro four thirds mount for a secure grip. This DSLR digital lens is designed with image stabilization, autofocus and has a fixed and rotating tripod collar. The lens weighs 2.17 pounds.