Amazon.com : Aputure V-Control USB Focus Remote Controller Compatible with Select Canon Cameras : Digital Camera Accessory Kits : Electronics
Aputure Imaging Industries Co. Ltd. VG-1 Aputure V-Grip VG-1 USB Focus Handle for Select Canon EOS Cameras 1D Mark IV, 5D Mark II and III, 7D, 60D, T3i, T2i, T1i, T3 (Black)