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. Fisheye lenses achieve extremely wide angles of view it does this by forgoing producing images with straight lines of perspective, opting instead for a special mapping, which gives images a characteristic convex non-rectilinear appearance.
It’s a high definition lens. HAs a front filter thread of 52mm. 180 degrees capability with a high speed auto focus. High resolution anytime during day or night. When you buy the Neewer lens it comes with a 3 month warranty by the seller.