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This is the essence of visualisation. With practice you spend less of your time peering through that fiddly little viewfinder, and much more actually looking directly at the world. Increasingly, you will have a shrewd idea exactly where to stand, and which lens to use, before you ever raise the camera to your eye.

Visualisation means more than just seeing the raw ingredients of the shot. It also means being aware of the differences between the way the camera sees and the way the eye sees. We’ve already alluded to depth of field, and to the way the camera deals with movement, with colours, and with big differences in brightness.

One of the most important factors remains the ‘mental zoom lens.’ Physically, the human eye has an almost fixed focal length. It’s the brain which can switch almost instantaneously from ‘seeing’ a wide-angle view to a narrow ‘telephoto’ one. This ability is very powerful, and very useful to the photographer, as long as you’re aware of what’s going on.

Pinnacles, Namburg National Park, Perth, Western Australia (Chiz) OK, you tell us, where’s the ‘subject’ in this shot?