Like the DP1 (which continues in Sigmas’s line-up, the DP2′s lens has a fixed focal length. However, instead of being wide-angle, it offers a 24.2mm focal length that equates to 41mm in 35mm format. You can’t zoom in with this lens – either optically or digitally. The only zooming provided on the DP2 is playback zoom (up to 10x), whereas the DP1 provided buttons for a 3x digital zoom function (which wasn’t particularly useful).
Constructed from seven elements in six groups, this lens is substantially faster than the DP1′s lens, covering an aperture range from a wide f/2.8 to f/14. Its aperture range is, therefore, significantly wider than most digicams, which typically stop at f/8.
