Canon RS-IL04UL, 1.95x, 3.74:1 - 7.54:1, 53.6 - 105.6 mm, 2.34 - 2.81, Black, EOS-1D X
Canon RS-IL04UL. Zoom ratio: 1.95x, Throw ratio: 3.74:1 - 7.54:1, Focal length range: 53.6 - 105.6 mm