Snapchat is insanely powerful. Not only has it changed Facebook (for better or worse), it has popularized the term "vomiting rainbow" and transformed selfies. Just over a year ago, Snapchat introduced ...

Tiny video cameras with multiple ultra-wide lenses capture the entire world around you—all 360 degrees of it. These are the best we've tested. Images, and the devices that capture them, are my focus.