What is a Fisheye Lens? (And When Would I use It? )

A Fisheye lens allows your camera to take wider angle shots at the expense of softer focus, or some “bulging”. I often use a fish-eye when I am shooting at trade shows and want to be very close to the person I’m shooting so people don’t walk in to the shot, but don’t want it to look like I am right on top of them.