Follow focus

Hi

I would like to do follow focus for my gimbal camera. If sb help me, which motor can I buy?
must be small , 2 way rotating, control by trigger or switch
Thank You

You can certainly motorize the focus, but the motor will not “know” if the camera is in focus or not. If you plan to do it manually, you need to have an idea of how much torque is required to rotate it.
Do you have a model of camera? Is it really easy to rotate by hand, or has some friction? Last, do you know how many revolutions you need to do?
The more details you can provide, the better we can help.