"One of the first things to strike you when looking closely at photographs is the ambiguity of the medium. Some objects appear completely different to what you know they were in reality. For example, people reflected in a furniture shop window can seem to be walking on a sofa, or the strange play of light on the face of a kind old lady can turn her into a hideous crone.

It is very easy to miss these things at the time, especially if your eye was concentrating on other compositional features, or if you were eagerly following the event or incident that was your main subject. Remember that a photograph shows what the camera records, not what you thought you saw. "

Paul Hill, ‘Chapter Two: After the Shutter is Pressed’, Approaching Photography, 2nd Edition, 2004, Photographers' Institute Press, ISBN 1 86108 323 8, p38”

— Approaching Photography by Paul Hill (Page 38)