Не помню уже, но примерно так:

public IEnumerator MoveCam(Transform fromPoint, Transform toPoint, float transTime)
{
     var timer = 0f;
     while(timer <= transTime)
     {
          yield return null;
          var tempTime = timer / transTime;
          var camTrans = Camera.AllCameras[0].transform;
          camTrans.position = Vector3.Lerp(fromPoint.position, toPoint.position, tempTime);
          camTrans.rotation = Quaternion.Lerp(fromPoint.rotation, toPoint.rotation, tempTime);
          timer += Time.deltaTime;
     }
}