This updated version II is fully compatible with Canon Digital EF-S lenses, as well as THE standard photo EF and TS-E lenses. There is a White-index mark provided for digital SLR EF-S lenses and a red mark provided for photo lenses. Extension Tube EF 12 II is made especially for close-focusing with wide-angle lenses. It shortens focusing distance of the lens. It is compatible with all lenses, except 15mm f/2.8 fisheye, 14mm f/2.8L and MP-E 65mm f/2.8. Item includes a lens cap