Photographs are visible manifestations of what is captured when light strikes film or a digital sensor within a camera. Originally photographic prints were created by exposing any of several light-sensitive materials to light, usually passed through a negative. With the recent dominance of digital imaging, prints come increasingly from, well, printers. Likewise the perception of photographs has shifted from the physical manifestation of an image -- something you can "hold in your hand" -- to a visible manifestation -- now, for instance, a photographic image on a computer screen is called a "photograph," as is a still "pulled" from a video. Many people think this practice, and the desire for multimedia content, will mean the eventual end of "still" photographs.
Debate continues about the objective of photographs, especially documentary photographs. Henri-Cartier Bresson famously called it the "decisive moment," and hundreds of bloggers have riffed off that with varying degrees of success. The most popular discussion of photographs is usually about their meaning within a social or political context, and whether they can be "trusted," especially now that digital manipulation is so easy.
by Miki Johnson
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