~70-200mm focal length
105-300mm equivalent focal length on APS-C cameras, 112-320mm equivalent focal length on Canon APS-C cameras
F2.8 constant maximum aperture; F22 minimum
Ring-type ultrasonic-type AF motor with full-time manual focusing
Image stabilization, 4 stops claimed. Dual mode, normal and panning
77mm filters
1.40m/55.12" minimum focus
Available in Canon EF, Nikon F (FX), Pentax KAF3, Sony Alpha, Sigma SA mounts