Rushing Water

This is another shot from Shenandoah National Park. I believe this is a small waterfall on the White Oak Canyon trail.
I set the camera and tripod up close to the edge of the rocks (very carefully) and used the mirror lockup and a 2 second timer to reduce vibrations and camera shake. Even with a 1/8th second shutter speed, the rush of the water over the falls creates a pleasing blur. I cropped out the trees and plants in the foreground and background in order to create a more abstract and interesting image.
I also converted to black and white after I took the shot because I liked the almost 50/50 balance between dark and light in the photo and because the lack of color emphasizes the shapes better.

Canon 5D, 24-70 f/2.8L
@51mm, f/22.0, shutter-1/8 sec, ISO-100
[click photo to enlarge]