Well the technical data says focal length 50. So I make the guess that fisheye refers to the door peephole. That would give you a fisheye effect. David you should look into the “LensBaby” which is an attachment lens to your camera. Actually it mounts to the Canon body and gives you a super selective focus. I view it as a gimmick lens. But experimenting could produce some fairly interesting images. Check it out online. You also can experiment with other Canon lenses by renting them to try. I have done this and it’s great fun to play with expensive glass that you would otherwise never buy.