Sony 18-70mm f/3.5-5.6 DT, Sony's DSLR standard kit lens, is a versatile general photography. The Sony 18-70mm compact and lightweight design is specific for DSLRs with APS-C size sensors. Sony 18-70mm f/3.5-5.6 DT lens has an equivalent 27-105mm focal length in 35mm full format, seven diaphragm blades, lens construction of 11 elements in nine groups with one aspherical element and one ED(Extra-Low Dispersion) glass element - corrects chromatic aberrations, and 0.38m minimum focus. The lens has a stunning 4x zoom ratio expanding from a wide to modest telephoto range.