How can I take a 360 degree image of something?

Episode 1706 (34:35)

JP from Orange County, CA
Sony A7

JP is looking for a good photographer's 360 turntable. Essentially, it's a lazy susan for photographers. Leo says that there's software now that largely lets you do this with just your iPhone. The app is called Bellus 3D and it does a very credible 3D render of your object. 

What's a good mirrorless camera for JP to move away from his Canon DSLR? Leo says he loves the Sony A7, but since JP has all that Canon glass (lenses) that he's invested in, the Canon R series is probably the best way to go.