look at player and target Code + Explanation

Camera shown in vid

Code:

using UnityEngine;
using System.Collections;

public class CameraController : MonoBehaviour {
   public GameObject FollowObject;
   public float FollowDistance;
   // Use this for initialization
   void Start () {
   
   }
   
   // Update is called once per frame
   void Update () {
      transform.position = FollowObject.transform.position + FollowObject.GetComponent<Stats> ().centerPoint;
      LookAtTarget ();
      transform.position = transform.position - (transform.forward * FollowDistance);

   }

   void LookAtTarget(){
      if (FollowObject.GetComponent<MechaController>().LockOn) 
         transform.LookAt (FollowObject.GetComponent<MechaController>().Target.transform);
      else 
         transform.eulerAngles = FollowObject.transform.eulerAngles;
   }
}

explanation(best i can do):
 on the update method it places itself at the center point of the folow object determined by follow objects position and follow objects centerpoint(offset). then the camera points itself towards the target object and backs up the distance you want it to follow at. 

script is pretty self-explained, if you don't understand.