Your camera--whether it's a DSLR, an interchangeable-lens camera, or an advanced compact--doesn't need to stay as it was when you bought it. You can make your camera suit you, to do what you want it to do and exactly how you want to do it. These hacks, gathered by our friends at Pop Photo, range from super simple, no-cost hacks (change what the buttons do!) to more advanced hardware tweaks (swap out the screen, add GPS/Wi-Fi/Bluetooth). See the whole list here.