ISO 12233 Test Chart, downloaded from here printed on a Samsung ML2010 B/W laser printer at 1200dpi. Photographed using a 40D on a tripod with a TC-80N remote release and a Sigma 150mm f/2.8 macro lens. 1/80s, f/22, ISO 200, manual exposure, manual focus. Lit by natural light and a Canon 580EX. No post processing. This image shows detail at a 100% crop

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