70-200mm focal length.Maximum Magnification Ratio 1:3,1 (f=200mm, MFD 0,95m) 105-300mm equivalent focal length on APS-C cameras, 112-320mm equivalent focal length on Canon APS-C cameras F2.8 constant maximum aperture; F32 minimum Micromotor-type AF motor without full-time manual focusing 77mm filters 0.95m/37.40" minimum focus Available in Canon EF, Pentax KAF, Sony Alpha, Nikon F (FX) mounts