I bought 2 of these frames to install the wireless CamRanger 2 system on the Sony Alpha A7ii and A7Rii in my studio. CamRanger mounts on a cold shoe using a Tilt SmallRig monitor mount and can be easily moved between cameras as needed. Much cheaper than the SmallRig version and does the job perfectly allowing you to conveniently mount the CamRanger without interfering with the light triggers on the cameras hotshoes.