Easy replacement - you lose some of the IR view

I have attached the lens on my 7Links Outdoor IP Camera IPC-710IR. Installation and adjustment have been completed in a short time and without any problems. Thus, the viewing angle to the desired level is expanded. Of course, you lose a part of the illumination in the dark by infrared - the IR lamps are indeed originally for the narrower perspective constructed, but the view is still sufficient for me. In daylight, everything works without any restrictions. Through the wide-angle (the lens is of course not equalized) there is a certain optical distortion ("fisheye view").