17–35mm · f/2.8–4
The Sigma 17-35mm f/2.8-4 EX DG Aspherical is a well-built ultrawide zoom with improved optics over its predecessor. It offers excellent sharpness and strong close-up performance, though optical quality drops at longer focal lengths due to the variable aperture. Build quality is solid with a sleek matte finish, HSM motor, and useful depth-of-field scale. It suits budget-conscious photographers seeking a versatile wide-angle zoom for full-frame or APS-C, especially for close-up work.