With a central focus and a condensed periphery, a fisheye lens security camera gives you a concentrated look at a wide field of view. It’s great for a parking lot or a warehouse, where the finer details aren’t as important as the overall picture. These are self-contained and, since the lens is doing the heavy lifting, they aren’t as susceptible to mechanical failure as their multi-lens counterparts. What you lose in resolution, especially at the edges of your field of view, you make up for in reliability.