Canon EF 15mm f2.8 Wide Angle Fisheye Lens has been discontinued, here are some related products you might like:
Fisheye lens with a 180° angle of view for unique and intriguing effects. The wide depth of field makes it even more interesting. The short minimum focusing distance of 0.7' gives new meaning to closeup shots. The lens has a fixed petal-type hood and a gelatin filter holder at the rear.
- Internal focusing
More information about Canon Products and Lenses: (Link to Canon Website)