Backyard through a fisheye

Jill rented a Canon 8-15mm f/4 fisheye lens. It arrived today, so I played with it while she was at work. It is extremely wide. It's too wide for my full-frame camera, so she probably will have to use a crop sensor if she wants to get anything good.

She rented it because she'll be taking photos of a play in her campus' small planetarium. She wants to be able to capture the ceiling and actors, and a super-wide angle might be able to get what she wants.