[lmnt]

It's possible to judgde the relative positions of the photographers by eye based on some of the waves directly under the lighthouse. In Eric's picture there are some distinct crests immediately below the lighthouse door. In Ron's picture the exact same crests are on a diagonal line from the door toward the lower left corner of the frame. Tracing this imaginary line "out of the picture" would lead us to Eric's position, which means that Eric is to the left of Ron.