Its no surprise when smartphone makers release giant 6-or-so-inch phones any more, but whenever a phone comes along with a giant camera on its back, its still something to gawk at. This week, the subject of our attention came from Samsung, which unveiled the Galaxy K zoom, a high-end smartphone with a built-in camera thats as good as a modern point-and-shoot. Manufacturers have been trying to get creative with smartphone cameras for years now to mixed results, so we thought wed take a look at some of the more exciting and interesting options that theyve tried out so far. Samsung changes a lot between its two zooms