Sigma 28-135mm f/3.8-5.6 Macro IF Aspherical is a high magnification zoom covering a wide focus range from wide angle to telephoto and macro. The tele-macro mechanism for close-up photography produces 1:2 maximum reproduction ratio. Thirteen elements with one aspherical element effectively compensates distortion and aberrations while creating high image quality at all focal lengths. Additonal features include internal focusing, 19.7" close focusing distance, seven-blade diaphragm, 75° to 18° viewing angle and 62mm filter thread. With its compact size and versatility, this lens is ideal for travel or snapshot photography.