The Vivitar Series 1 19-35mm f/3.5-4.5 is a standard zoom lens. When mounted on crop cameras, the lens delivers exceptional results. The lens has an aperture range of f/3.5-22 with a minimum focusing distance of 1.6 feet. The lens also feature 13 elements in 11 groups, eight iris blades, 63° to 97° angle of view and 77mm filter thread. This compact and lightweight wide angle partner is perfect for travel and general purpose photography.