I finally had a chance to pull one of my cams to update the lens from a 4 to 8 mm lens, which I purchased 2 of, some time ago. It definitely has zoomed in better and should pick up details of faces. It has helped me also to decide on what to update other cameras to. Much better then buying a new camera for sure. I am pretty sure I will update 1 more with the other 8mm and then get 2 of the 6mm lens for the front of the house to sidewalk cams. Here is the change made with driveway cam.