Picked up at canon 15mm fisheye lens today. I’m contemplating selling the sigma 12-24mm for this instead. The sigma seems to be a bit too wide for me on the 5D (full frame) and it’s not very sharp in the corners. It’s also a bit slow for me where the canon is a consistent f/4. The 15mm fisheye is a lens I’ve always wanted. We’ll see if I keep them or the sigma, but I’d bet the sigma will be up for sale soon.
