C ＃ perspective following

using UnityEngine;
using System.Collections;
public class CameraShareScript : MonoBehaviour
{
// The distance of the camera from the object to be followed
Vector3 Dir;
// The object to follow
public GameObject m_Player;
// Use this for initialization
void Start ()
{
// Get the distance between the camera and the object to follow
Dir = m_Player.transform.position - transform.position;
}

// Update is called once per frame
void LateUpdate ()
{
// The location of the camera
transform.position = m_Player.transform.position - Dir;
}
}