I saw this man talking with someone just outside of my frame, and as he raised his arm to say goodbye, I noticed how the diagonal line of his arm echoed the thrusting diagonal limbs of the tree next to him, as well as the diagonal roof line of a building canopy at right. I exposed for the light on the wall, throwing the subject into a silhouetted abstraction. Since there was no color in the image, I converted it to black and white, further abstracting the scene.