> Also the bit about seeing around an opaque object, which I'm not sure what that means but could be an interesting first? It's just a property of light field

> Also the bit about seeing around an opaque object, which I'm not sure what that means but could be an interesting first? It's just a property of light field cameras. Technically, other cameras can do it to some extent too. If there's some opaque object with another object behind it, 1. If you focus on the front object, you'll see the object behind it--blurred. 2. If you focus on the back object, you'll be able to see the back object behind the blur of the front object. With a light field camera, you can essentially "cut away" the blurry parts and get them in focus. You're not able to see anything new, you're just able to see things in the original image more clearly.