while the video is pretty amazing by itself, it's how the photographer captures the video that is even more amazing!
video:
behind the scene:
Woah, that is nuts! Imagine if he dropped a lens while changing............
Thanks for sharing, that is one scary way to shoot photographs!
yes it's really scary, and you have to be a better rock climber than the one you are shooting because you need to get into some tricky position/pose
what happens if you drop a lens when changing, or worse your camera, or even worse your whole camera bag..
or YOURSELF!!!