This one was shot at f5.6 and reveals even more of the background. These last three shots are one stop brighter than the previous image.It appears to be possible to darken the background with flash, but it doen't work well when the sun is able to get into part of the background. There is a barricade at each end of the bridge with a "Road Closed" sign. This might make a better backdrop than the bridge railing, but the signs are reflective and could cause problems.