3DTD/Assets/Scripts/Camera/CameraController.cs

using UnityEngine;
using Cinemachine;

public class CameraController : MonoBehaviour
{
    [SerializeField] private GameObject cam;

    public float scrollSpeed;

    public Vector2 sens;
    private Vector2 defaultMaxSpeed;

    private void Start()
    {
        defaultMaxSpeed *= 0;
    }

    private void Update()
    {
        defaultMaxSpeed = new Vector2(cam.GetComponent<CinemachineFreeLook>().m_XAxis.m_MaxSpeed, cam.GetComponent<CinemachineFreeLook>().m_YAxis.m_MaxSpeed);

        if (Input.GetMouseButtonDown(1))
        {
            defaultMaxSpeed = sens;
        }

        if (Input.GetMouseButtonUp(1))
        {
            defaultMaxSpeed *= 0;
        }

        cam.GetComponent<CinemachineFreeLook>().m_XAxis.m_MaxSpeed = defaultMaxSpeed.x;
        cam.GetComponent<CinemachineFreeLook>().m_YAxis.m_MaxSpeed = defaultMaxSpeed.y;

        float scroll = Input.GetAxis("Mouse ScrollWheel");

        cam.GetComponent<CinemachineCameraOffset>().m_Offset.z += scroll * scrollSpeed;
    }
}