Make camera Zoom in or Zoom Out to focus all target objects

Hey guys, i some interval, i want to check all need objects on screen, and make the camera fit exactly this objects, with some help i can get this works:

tempAllCubes = createRotateObj(); Bounds bounds = new Bounds(); MeshRenderer[] renderers = GetComponentsInChildren<MeshRenderer>();

             foreach(GameObject tempCube in allGameObjs)
             {
                 if(tempCube!=actualGameObj)
                 {
                     bounds.Encapsulate(tempCube.renderer.bounds);
                 }
             }

So this i get the target bounds!

Now i want make the camera FoV get zoom in or zoom out to fit this bounds!