Pool Portrait

I took this picture of my brother in a small blow up pool. I shot it on a Nikon 50mm f1.8 on my Nikon D800.
I shot at ISO 100, 1/8000 shutterspeed at f1.8. This was possible due to the intense natural lighting due to it being the middle of the day with a cloudless sky. I chose such a high shutter speed because I wanted to freeze the motion of the water completely. I chose black and white to cut out distracting colourful reflections.