這本書是一台相機

Bought this for my nephew and ended up hogging it all afternoon. The pop-up pinhole mechanism genuinely produces an image, which surprised me for something that folds flat like a normal book.

I've never seen a book that actually takes photos before—the hands-on demonstration of aperture and shutter speed makes the concepts click instantly.

The pop-up mechanism actually works as a pinhole camera, which I didn't fully believe until I tried it myself. Took a few attempts to get the exposure right, so it's not exactly point-and-shoot, but the explanation of how light travels through the aperture finally made the concept click for me.