It’s not easy, but there are ways to get that spherical, fisheye look with just about any camera. One method is to obtain a peephole glass, like the ones you find in motel room doors to check who is knocking at your door. With the glass, you’ll have to cover it with either tape or a boxed enclosure of some type to prevent light distortion from the side. Another method is to take a traditional photographic image, and “fisheye” it with the special effects you can find in Photoshop.