HTC has struggled with cameras in recent years, but the HTC 10 is packing a solid sensor this time. You can take full advantage of it with the aid of Pro mode. It's accessible from the slide-out menu on the left of the viewfinder. When in Pro mode, you have sliders for all the camera settings in a line across the bottom of the screen (white balance, exposure, ISO, shutter speed, and focus). Tap on any of them to expand the full slider UI so you can toggle between auto and manual. The mode selector also lets you set the Pro mode to capture RAW files instead of JPEG, allowing you to edit them more effectively in an app like Lightroom or Snapseed. Unfortunately, there's no option to save both JPEG and RAW.