Camera Follow - Collision Issues

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class cameraController : MonoBehaviour {

    public GameObject target;

    private float _desiredDistance = 5f;
    private float _maxDriftRange = .5f;

    private float _pitch = 0f;
    private float _pitchMin = -40f;
    private float _pitchMax = 60f;
    private float _yaw = 0f;
    private float _roll = 0f;
    private float _sensitivity = 5f;

    void Start() {
        Cursor.visible = false;
        Cursor.lockState = CursorLockMode.Locked;
    }

    void LateUpdate() {
        CamControl();
    }

    void CamControl() {

        _pitch -= _sensitivity * Input.GetAxis("Mouse Y");
        _yaw += _sensitivity * Input.GetAxis("Mouse X");

        _pitch = Mathf.Clamp(_pitch, _pitchMin, _pitchMax);

        transform.localEulerAngles = new Vector3(_pitch, _yaw, _roll);

        Vector3 camTargetPos = target.transform.position - _desiredDistance * transform.forward;
        float t = Vector3.Distance(transform.position, camTargetPos) / _maxDriftRange;

        float offset = ViewObstructed();

        transform.position = Vector3.Lerp(transform.position, camTargetPos + offset * transform.forward, t * Time.deltaTime);
        transform.LookAt(target.transform);

    }

    float ViewObstructed() {
        float hitDistance = 0;
        RaycastHit hit;
        if (Physics.Raycast(target.transform.position, transform.position - target.transform.position, out hit, 3f)) {
            if (hit.collider.gameObject.tag != "Player") {
                hitDistance = _desiredDistance - hit.distance;
            }
        }
        return hitDistance;
    }

}