vector3 in direction you're looking, not facing?

I’m writing a lockon script with a first person controller, however it doesn’t work, as transform.forward just faces level to the xz plane. Is there a Vector3 option that takes into account the direction you are looking vertically as well?

My current code is:

using UnityEngine;
using System.Collections;

public class lockOnRockOn : MonoBehaviour {
	public GameObject lockOn;
	public GameObject samusControl;
	public float lockOnDistance = 100.0f;
	// Use this for initialization
	void Start () {
	}
	
	// Update is called once per frame
	void Update () {
		if(Input.GetKeyDown(KeyCode.LeftShift)) {
			Ray originRay = new Ray(transform.position, samusControl.transform.forward);
			RaycastHit hitProperties;
			Debug.DrawRay(samusControl.transform.position, samusControl.transform.forward, Color.green, 10.0f);
			if(Physics.Raycast(originRay, out hitProperties, lockOnDistance)) {
				if(hitProperties.transform.gameObject.tag == "enemy") {
					lockOn = hitProperties.transform.gameObject;
				}
			}
		samusControl.transform.LookAt (lockOn.transform);
		}
	}
}

Try Camera.main.transform.forward