Sigma Photo introduces the Sigma 15-30mm f3.5-4.5 EX Aspherical DG DF for Canon 35mm SLR cameras and is the first to open a new range of photographic possibilities. Using a hybrid aspherical lens in the front lens group to minimize distortion and astigmatism, and molded glass aspherical lens in the rear lens group to minimize spherical aberration, ultra-wide-angle photos appear more natural than ever. Filter size - Rear (gelatin filter insert type) - Does not use any front, screw-in filters Lens construction - 17 elements in 13 groups Maximum aperture - F3.5-4.5 Minimum aperture - F22-32 Dimensions - 3.42 Diameter x 5.12 Long Includes protective case |
