I'm looking to do an automated focus stacking using a manual macro lens, and I would like to find a solution that avoid focus breathing (i.e. a change in the FOV while changing the focus).
I was thinking about using a motorized macro bellow to allow me to adjust the focus while keeping the camera stationary (the lens would be moving closer to the subject).
If that would not work, is there any other suggestion that would minimize breathing? Would it be possible to also move the camera away from the subject while the lens extend to compensate for the change in FOV that might happen?