so ive been running a 3-axis gimbal with my Sony a6400 for about 8 months now, pretty happy with the stabilization, not perfect but workable. decided to upgrade to a bigger unit because i wanted to carry the a7 III for better low light performance on some event work im doing. got everything balanced properly, or at least i think i did, took it out last weekend and honestly the footage looks more jittery than before not less. like theres this weird oscillation that kicks in whenever i do a yaw rotation. pan shots are especially bad.

i dont think its a PID issue because i havent touched any of that yet, just wondering if anyone has run into this where going bigger actually made things worse before they got better. the new gimbal is rated for the weight so its not overloaded or anything. payload is right in the middle of the range actually.

the drone is a custom hex if that matters, hobbywing X6 motors, 30x10 props roughly. pretty stable platform generally speaking.

yeah almost definitely PIDs need retuning when you swap gimbals, doesnt matter if the new one is rated for the weight. the whole system has to be rebalanced from a control loop perspective not just physically. the oscillation on yaw is a classic sign the damping values are off for the new load. id start with reducing the yaw P gain like 10-15% and see if it smooths out before you go chasing anything else. also check that your physical balance is actually dead-on because even being slightly nose heavy with a heavier camera amplifies any existing issues. people underestimate how much a 200g difference in camera weight changes everything on the tune.

had basically the same thing happen when i went from a GH5 to an a7S setup on my octocopter. turned out one of the gimbal motor screws had backed out slightly during shipping which was causing flex in the roll axis. looked balanced but wasnt rigid. worth just physically checking everything is tight before you go deep into software tuning. wasted like two weekends on PIDs before i found it lol