Format: 35mm SLR Type: Zoom lens Focusing: Manual Focus (MF) Lens mounts: C/Y (contax/yashica), C/Y (contax/yashica), Canon FD, FDn, Canon FD, FDn, Konica AR, Konica AR, Nikon F (FX, DX), Nikon F (FX, DX), Olympus OM, Olympus OM, Pentax K, Pentax K, Minolta SR (MD, MC), Minolta SR (MD, MC) Optical scheme: 14 elements in 12 groups Optical scheme Specifications: Focal length Max. aperture Min. aperture Blades Min. Focus (m.) Filter Ø (mm.) Weight (gr.) Height (mm.) 28mm - 90mm f/2.8 - f/3.5 f/16 6 0.23 67 680 111.5