The Zenmuse Z15-GH4 HD 3-Axis Gimbal for Panasonic GH3/GH4 from DJI performs two key functions: keeping the camera level and providing stabilization, thus helping you transform a larger multi-rotor UAV, such as the S1000, into a platform for professional aerial video and aerial photography. Featuring ?0.01? control angle accuracy, the Z15-GH4 features three operation modes; two optimized for aerial video and photo use and one for FPV (first person view) applications. The gimbal is operated using a dedicated stick on the transmitter (hand-held radio controller), and the receiver must have at least four free channels that can be assigned to gimbal operation. Alternatively, a second transmitter can be use by a dedicated camera/gimbal operator. The gimbal can be used with either the Panasonic GH3 or GH4 camera when paired with the Olympus M.ZUIKO DIGITAL ED 12mm f/2.0 lens. It is very important to only use the gimbal with this lens, as other lenses may throw off the balance causing poor performance and potentially damaging the servo motors. On-camera accessories - such as external microphones - should not attached either.