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With automatic digital cameras taking the world by storm, some people worry that the craft of photography is in danger of being lost. The images that are being posted on for Worldwide Pinhole Photography Day next week should reassure them. Technology overload? Forget it. These cameras don’t even have lenses: all you need is a lightproof container with a pinhole at one end and light-sensitive film at the other.

Pinhole cameras can be made small enough to fit almost anywhere. Justin Quinnell from Bristol, UK, took this image with a camera clenched between his back teeth. During the 10-second…