They say there’s no such thing as a free lunch. Maybe. However, in photography of the digital kind, there’s an equivalent function that, used properly, can be of enormous help in capturing subjects with degrees of sharpness that may surprise the less informed photographer. For some unknown reason you won’t find much about hyperfocal distance in recent digital photography books. Why? I suspect many writers on the subject try to avoid talking about the long established principles of photography to give the impression that digital photography is all about the pleasure of the craft and not to frighten people with the techy bits, all the historic paraphernalia of f stops, circles of confusion etc. Anyhow … I sometimes look longingly at my unused film camera gear and especially at the lenses and then notice something I see on very few current digital SLR lenses — a scale displaying a zone of focus. This shows the function of lens aperture and distance setting; with a zoom lens there is info on the lens barrel that helps you to calculate the effect of changing the lens aperture, focus setting and focal length

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