Playerに追従するカメラ ref: http://qiita.com/kajitack/items/bab5cb649fe0cf6756d4

file0.cs

using UnityEngine;
using System.Collections;

public class CameraControl : MonoBehaviour {

    private GameObject player = null;
    private Vector3 offset = Vector3.zero;

    void Start () {
        player = GameObject.FindGameObjectWithTag("Player");
        offset = transform.position - player.transform.position;
    }

    void LateUpdate () {
        Vector3 newPosition = transform.position;
        newPosition.x = player.transform.position.x + offset.x;
        newPosition.y = player.transform.position.y + offset.y;
        newPosition.z = player.transform.position.z + offset.z;
        transform.position = newPosition;
    }
}

file1.txt

transform.position = newPosition;

file2.txt

transform.position = Vector3.Lerp(transform.position,newPosition,5.0f * Time.deltaTime);