Vivtar 13mm (similar to 14mm) F2.8 Ultra Wide Angel Lens for The Sony Alpha Series SLT-A33, SLT-A35, SLT-A37, SLT-A55, A57, SLT-A57, SLT-A57M, SLT-A57K, A58, SLT-A58, SLT-A58K, A65, SLT-A65V, SLT-A65VL, A77, SLT-A77, A77II, A99, SLT-A99V, A100, A200, A230, A290, A300, A330, A350, A380, A390, A450, A500, A560, A550, A580, A700, A850, A900 Digital SLR Cameras The Vivitar 13mm F2.8 Ultra Wide Angle Lens is by far the sharpest, most flare resistant lens in its class. Fast f/2.8 Maximum Aperture. 12" (30.5cm) Minimum Focusing Distance. The lens provides an ultra-wide angle field of view on both full frame and crop sensor cameras. Achieve wonderful perspectives and framings with a remarkable 115.7 angle of view on full-frame cameras, and 93.9 on crop sensors. Aspherical Lens / Reduced Flare/Ghosting. Compact, Only 3.2" (81mm) Long. Weighs Only 15.3 oz (434 g). Built-in flower design lens hood