The variable focus and zoom - varifocal lens on USB kit 5 is ideal for getting the picture just right. The lens can be manually zoomed in or out and focused accordingly via two small adjustments on the front of the camera. This means you can get a closer or wider view as you need when setting it up and therefore the location of the camera to its target view is not so critical. The viewing angle can be adjusted anywhere between 99 degrees to 37 degrees - the higher number being the wider angle and the lower number being the narrower "zoomed in" view. The IR LED's on this USB model have a max range of 30 metres and as with all our USB webcam kits it is supplied with a 10 metre connection lead, power supply and USB interface. The eyeball style USB web cam enables 3 axis adjustment for a straight picture to be achieved however uneven the mounting surface is. Drivers are supplied so the camera can be installed into imaging devices or sound video and games controllers in windows device manager for extended compatibility with windows software. The kit will also operate on the Mac and operates on Windows from XP up to 10 in 32 or 64 bit modes. Even works with Skype.