Revision history of "File:Derivative map.jpg"

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  • curprev 22:33, 21 August 2008‎ Rdavis talk contribs‎ 580 bytes +580‎ Please view at maximum size. This is a "derivative map" of my previous large format film pinhole photo of the interior of National Cathedral in Washington, DC. The derivative map essentially depicts how quickly light along a given "row" in the image is, p
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