Tamron Autofocus 19-35mm f/3.5-4.5 Wide Angle Zoom Lens for Canon SLR Cameras 19-35MM range Easy to carry anywhere, weighing just 10.5 ounces and only 2.66 inches long x 3.23 inches wide Fixed front element group and filter mount, facilitating use of polarizing filters Lens Construction - 11 Groups / 13 Elements Angle of View - 97 - 63 degrees