That is so true. It's really important to chose the correct focal length for each situation. There is no perfect "one size fits all" camera. I like a variety--not only in focal lengths, but features and even differing mounting heights. The Color4K-X and Color4K-T cameras are great for identification by color and work spectacularly, if the scene has enough ambient light. The Color4K-T180 cameras are best used in overview situations. The T54IR-ZE cams are sharp as a tack and adapt to situations where you just can't figure out what the optimal focal length might be. It allows freedom of adjustments. The PTZ adds another dimension and is wonderful for tracking quick-moving images like automobiles and people. One camera that you don't see here that I have at my porch and on the other side of the house and in the backyard are my Color4M-T's. Love those cameras. Best camera for a doorway and where you need soft, diffuse IR coverage. I like your comment of overlapping images. That is important. A person isn't always going to be facing in one direction, so I like to orient my cameras in different directions. What one misses, another might pick up. Anyway, thanks for the thoughtful comments. Here is another clip of "Guitar Man," showing how the cameras can follow someone around the perimeter of the property. Makes for a more interesting video too, I think.