Samsung has never been a leader when it comes to smartphone cameras but with the Galaxy S5, it's taken a step forward. It has nothing to do with megapixels—instead it's all about that weird-sounding feature called "phase-detect" autofocus, which allows the camera to focus in just .3 seconds. Samsung claims that's the fastest in the world, and it could seriously change how you use the camera.
We've tested basically every smartphone camera, and it's astounding how quickly their quality has been improving over the years. Low-light quality has never been better, and in recent years, the megapixel counts have been soaring, without seeing any of the corresponding loss in image quality you'd expect.