American travel photographer Trey Ratcliff - and former TedXQueenstown speaker - has had billions of hits on his travel photography blog. Trey is blind in one eye and only took up photography a few years ago. He made history by having the first HDR photo - that's High-Dynamic-Range imaging - ever to hang in the Smithsonian. The works are dramatic in scale and tend to be highly manipulated with hyper rich colours. Lynn Freeman asked Trey about his very first camera.