The human eye is very complex; the human brain very advanced in terms of its ability to process light and imagery. This results in us seeing a world that is visually busy. But, what the camera has the power to do, through silhouette photography, is to simply declutter our world. By leaving only the outline of the subject our focus shifts to the animal itself and it is there that the human eye can find rest. See my Dusk to Dawn portfolio of images which recently featured on the BBC News home page.