John Adkins took this photograph using the Light Field technique. Personally I absolutely love the way the ice looks in the cup while using this technique. The contrast inside the cup is very high by the way the dark shadows on the ice and the highlights are so light. This gives the photograph a more dramatic look by the way you can see more details inside the glass. Since John used light field the light is coming from behind the transparent background and has black edges on the background to have the dark edges on the glass and in the ice/water.