By the number of images taken here you can guess that these waterfalls are one of our favourite trekking destinations. It is also a good photographic laboratory for sphere images because there is something of interest everywhere you look. 

I took this image with a tiny little GoPro Hero2 Camera (cost $199) to see how it would compare with the one I took from almost exactly the same spot with my Canon 7D and Sigma lens (more than ten times the cost of the GoPro). I was surprised to find the resolution was actually better with the GoPro Hero2 - although there was more sensor noise in the image. The Canon 7D handled high contrast areas better - but then the Canon had a nice sunny - the GoPro had to contend with a dark cloudy day. 

The Canon 7D, Nodal Ninja and tripod is a hefty mass to carry on a trek and up and down a very steep trail while the GoPro weighs just about nothing and works fine at the end of a carbon telescopic pole that doubles as a walking stick. Plus it was a rainy day and the GoPro comes in a little waterproof housing. 

But what I was really wanted to try was to take the shot suspended out over the waterfall pool - something I really could not do with the Canon 7D. The results are pretty good - especially on a rainy day, and you get a nice sense of vertigo looking straight down into the pool from the cliff face.