Sigma 12-24mm f/4.5-5.6 EX DG IF HSM Aspherical Ultra Wide Angle Zoom Lens for Nikon SLR Cameras

Sigma 12-24mm f/4.5-5.6 EX DG IF HSM Aspherical Ultra Wide Angle Zoom Lens for Nikon SLR Cameras

The turgid view angle of the Sigma 12-24 4.5 5.6 EX DG ASPH Zoom (122 degree super wide view angle at 12mm over the diagonal axis) is suitable for shooting indoors and also landscape photography. It has a variable view angle from 122 degrees to 84.1 degrees. Four Special Low Dispertion (SLD) glass elements are provided for efficient recompense of color distortion, which is a common trouble with super-wide angle lenses.

Sigma 10-20mm f/4-5.6 EX DC HSM Lens for Nikon Digital SLR Cameras

Sigma 10-20mm f/4-5.6 EX DC HSM Lens for Nikon Digital SLR Cameras

The Sigma 10-20mm F4-5 .6 EX DC HSM is, on paper at least, a very attractive selection for APS-C users looking an ultra-wideangle zoom. The standout selling point are doubtless that 10mm wideangle view and the HSM focusing motor, which when coupled with Sigma's traditionally keen pricing, makes for a compelling overall package. In the flesh that promise is heavily realized ; optically the lens is a solid if not salient performer, build quality is up to Sigma's common standards, and the focusing is so fast, silent and accurate. So far, so good.