The DT 18-70mm 1:3.5-5.6 is Sony's standard kit lens supplied with their entry level DSLRs, which they describe as a versatile general purpose lens covering a wide range of applications, and which features aspheric and ED glass lens elements for 'outstanding clarity at all focal lengths'. The 70mm maximum focal length extends further into the classic 'portrait' range compared to the 18-55mm kit lenses typically supplied by other manufacturers, offering a flattering perspective for people pictures. The 'DT' designation stands for 'Digital Technology', and indicates that the lens is optimized for use on cameras with APS-C sized imagers. Read the whole review here. You can buy the lens here