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Re: HERO6 + Karma grip: Tips
Locked: Allows you to adjust where the stabilizer is looking in relation to the handle and then keep that position (suppose you want it looking upward, press the lock button, adjust the handle and then release. The gimbal will keep that orientation)

Follow mode: Since the stabilizer by default tries to stay level to the horizon, if you point the gimbal up or down it wont change the direction the stabilizer is looking. Putting it in follow mode forces the gimbal to look wherever you point the handle (good for following someone in a shot or when going down/up hill and you want the camera to look to where you are going)

Normal: Keeps the horizon level and slows left/right panning.