C# Decrease Mouse Sensitivity Camera Move

I have a script that makes the main camera follow the mouse. However I'm noticing that the camera is really sensitive to the mouse whenever it moves. I would like to control that sensitivity but I'm not sure how to implement it. I've tried Vector3 pos = Input.mousePosition / mouseSensitivity; and transform.position = Camera.main.ScreenToWorldPoint(pos) / mouseSensitivity; but neither appear have the effect I want. How exactly do you implement a variable that controls sensitivity?

 using UnityEngine;
 using System.Collections;
 
 public class Camera_Move : MonoBehaviour {
     public int mouseSensitivity;
     // Use this for initialization
     void Start () {
     
     }
     
     // Update is called once per frame
     void Update () {
 
             
         //Disable then replace with animation later
         Vector3 pos = Input.mousePosition;
         pos.z = transform.position.z - Camera.main.transform.position.z;
         transform.position = Camera.main.ScreenToWorldPoint(pos);
     }
 }