Camera FOV Unity - Control by Mouse
var minFov: float = 15f;
var maxFov: float = 90f;
var sensitivity: float = 10f;
function Update () {
var fov: float = Camera.main.fieldOfView;
fov += Input.GetAxis("Mouse ScrollWheel") * sensitivity;
fov = Mathf.Clamp(fov, minFov, maxFov);
Camera.main.fieldOfView = fov;
}