This is an upgraded Cage for SONY A7S A7R A7. Original model 1518. If you would like to upgrade your cage to this version, plz purchase smallrig 1645 top plate to replace to old top plate. (Search "Smallrig 1645")
SmallRig Sony a7/ a7S/ a7R ILCE-7/7R/7S Cage 1633 is equipped with a cold shoe adapter on the top plate, so that your camera can be mounted more steadily than only being attached with a fixing screw at the bottom.
Specially designed for Sony a7/ a7S/ a7R ILCE-7/7R/7S, 1/4" threaded holes on the top and side plate are for accessories.
Anti-twisting screws in the top and base plates are used to fix the camera.
Whole Solution System Vision: SmallRig 1635(B00Q3Q7SAK)。 Note: Please note that it doesn't fit Sony A7 II/ A7 RII/ A7 SII.