Andrew your shots are just amazing !!
Excellent work indeed.
Here's two of mine so far which I've had a chance to process.
The first is the waterfall at the lower end of the falls done in HDR using the 5D.
I've also included the link to the full-frame version below:
(Warning 2.7MB , 4368 x 2912 pixels) ...
http://www.astro-image.org/page/tr/somersbyfallsff.htm
The second was my very last shot which was very rushed as we had to get back to the carpark before they shut the gates.
Here I had to use some flash because it was almost 8pm !
I'll post more later.
Cheers and thanks for looking.