The Zacuto Z-Finder Mounting Frame for Sony a7S is compatible with the A7s, A7s II, A7R, and A7R II. It will not work when a battery grip is added to the camera. It is for use with the DSLR Gorilla plate V2 or Mini DSLR Baseplate in order to attach a Zacuto Z-Finder to your Sony A7S. This frame is compatible with all DSLR Z-Finders. The Z-Finder frame attaches to the Gorilla Plate or DSLR Baseplate with an included Z-Finder Mounting Frame Slide Kit.This slide enable front to back, side to side, and up and down adjustment to line the frame up with the camera LCD. The frame has a rubber coating on the back to avoid scratching and to ensure a clean seal with the LCD screen.