SUPERIOR IMAGE QUALITY - Experience exceptional detail with this 20mm lens, featuring 2 aspherical & 3 ED elements for outstanding sharpness and minimal distortion across the entire full-frame. ULTRA-WIDE PERSPECTIVE - Capture expansive scenes with a 94.4° angle of view, perfect for landscapes, architecture, and interiors, offering creative flexibility with the 20mm focal length. PRECISION SHIFT CONTROL - Correct perspective and create unique images with the shift capability, offering a 2.55' (65mm) coverage of image circle, ideal for architectural photography. BEAUTIFUL BOKEH - Achieve smooth and pleasing background blur with the 14-blade aperture, enhancing subject isolation and creating stunning visual effects, even at f/4 aperture.