HDR PHOTOGRAPHY

In photography HDR is high dynamic range. this means that the camera will process photos slightly differently than normal in order to capture greater detail from bright and dark areas in your photo. 

#1: You can take a light, a dark and a medium photo and plug them into the software. 
#2: You can take a picture with the iPhone 6 or take an HDR picture with a camera that has that feature. In this picture I am impressed because the lighting looks cool and also the way the top of the stairs looks like you're entering a new world.