I'm looking at buying a new tripod to go with my 7D as the one I currently have is a little bit too lightweight for it. The camera will have the 15-85mm lens mounted to it the majority of the time. I will only be using it for shooting waterfalls and similar stuff to that and don't want anything too large and heavy as I'll be taking it with me in my day pack on bushwalks. Any suggestions/links would be much appreciated