Speed kills, and the iPhone goes from 0 to a good picture faster than anything else I was at Intel’s CES booth, composing a photo with my Android smartphone, when a pair of anonymous hands thrust a shining iPhone 6 Plus into my line of vision. A nonchalant tap of the camera shutter button later, the hands were pulling back, having captured a stupendously clear and sharp picture on the first attempt. By the time I’d completed my routine of setting proper focus and steadying myself, the dude who’d beaten me to a better shot with none of the effort...