Superb wide-angle lens capturing sharp perspectives with a 1.3' minimum focus, built-in retractable hood, and manual focus. Features a bright f/2 aperture, 10 blades for smooth bokeh, 46mm filter threads, 1:11.3 max magnification, full-frame coverage, 74° angle, and weighs 9.7 oz. Specs include: 28mm focal length, f/16 minimum aperture, Leica M mount, manual focus, 0.09x max magnification, 9 elements in 6 groups, and dimensions of 2.3 x 2.2" / 58 x 55 mm."