The 16-105mm f/3.5-5.6 DT Standard Zoom Lens from Sony is a
DT-series Alpha lens that has been optimized for cropped image sensors,
and as a result it is not recommended for use with larger full-frame
cameras. Its 16-105mm focal length is the 35mm equivalent of a
24-157.5mm lens when attached to these cropped APS-C size digital
cameras. It is constructed of 15 elements in 11 groups - three of them
being aspherical glass elements, with additional Extra-low Dispersion
(ED) glass elements - which all help to deliver sharp, clear photos
throughout the zoom range. It has a minimum focusing distance of 9.8"
and a front-end filter diameter of 62mm.