Very Lovely Photo setting! I too would love to have the chance to see and photograph such a magnificent spot! The photo does look a little fuzzy to me, probably from a little camera shake. I don't know what your shutter speed setting was. I always try to set my shutter speed to be 1 1/2 times the size of the lens, so my speed would have been no less tan 1/300 th. of a sec.or maybe even a little faster.
When I need to hand hold my 400L I try to keep the shutter speed at 1/800ths. or 1/1,000 th. of a second.
Dick