How to remove Player Zoom while using Camera CFrame?

Hello, i'm using a Camera CFrame to set Camera Position but players can rotate it and zoom out and i want remove it, any suggestions?

cam.CameraSubject = game.Workspace.CameraPosition
cam.CameraType = "Fixed"
cam.CFrame = CFrame.new(19074.178, 5.822, -2213.138)
cam.Focus = CFrame.new(19060.852, 7.057, -2207.978)

cam.CameraType = Enum.CameraType.Scriptable