While trying to control the camera on a shoulder rig, it can be very difficult to try and focus a DSLR. We recommend this shoulder rig that helps you with that focusing problem you might be running into. The Z-drive is a universal follow focus that can change your focus by a simple turn of a dial. The Zacuto DSLR Recoil Rig comes with the handgrip kit, dslr baseplate, the Z-Drive, and of course the shoulder pad for long term shooting comfort. Not very many shots can be focused while using a DSLR on a shoulder rig, however the Z-Drive and single hand grip allows you to have complete control over both the camera and the focus.