Smooth 3D camera orbit

[multireflex]

Hi all ! 🙂
One quick question: is there any way to play with the "Orbit camera" in 3D environment smoothly and precisely? Can I constraint that orbit to just one single axis? I am trying to make an orbiting animation with a 3D depth map (as you can see in the screenshot) but it's like I barely can keep it under control, it flies freely... :_(