Konica-Minolta AF 17-35mm F/2.8-4 (D) wide angle lens for Sony/Minolta A-Mount SLR & DSLR AF A-Mount; wide-angle zoom lens for Minolta Dynax/Maxxum and Sony Alpha SLR & DSLR Aspherical lenses; anomalous dispersion glass 17-35mm focal length F/2.8 maximum aperture 14 elements in 11 groups