A special L board for Sony a7 3 camera is characterized in that it can be pulled and pulled, and the wiring will not be blocked when the tripod is connected for vertical shooting. The height of the camera grip is increased, and the little thumb is no longer anywhere to place. A wrench is hidden at the bottom for easy adjustment, disassembly and assembly. Strong expansibility, with Akka and 1/4 holes on the side, etc.