The Sony DT 16-105mm 1:3.5-5.6 was announced in September 2007, as a premium kit lens to accompany the Alpha 700 DSLR. Sony has thankfully (and uncharacteristically) managed to avoid the over-proliferation of letters which afflict lens names from other manufacturers, with just the 'DT' badge (for Digital Technology) indicating that the design is optimised for cameras with APS-C imagers. Sony's information also reveals that the lens incorporates one ED (Extra-low Dispersion) glass element and two glass aspherical elements, promising minimised colour aberration and excellent contrast across the zoom range, plus a circular aperture for pleasing background blur. Read the whole review here.