Leica&nbsp;Elmarit-M 28mm f/2.8 ASPH Lens Leica 28mm f/2.8 Elmarit-M Aspherical Lens - Rectangular Metal Lens Hood - Metal Lens Caps - Threaded Protection Ring - Leica 3 Year Limited Warranty Focal length: 28.4mm Aperture: f/2.8 to f/22 Camera Mount Type: Leica M Angle of View: 75-degrees