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40mm Macro lens question
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<blockquote data-quote="WayneF" data-source="post: 202685" data-attributes="member: 12496"><p>The 40mm specifications include that the minimum focus distance is 6.4 inches, but this is always measured to the focal plane mark near the rear of the camera body (the O with a line through it, about even with the rear of the top LCD). The distance in front of the 40mm lens at 1:1 magnification is more like only 2 inches (called macro working distance).</p><p></p><p>For the 105mm VR macro lens, this working distance increases to nearly six inches.</p><p></p><p>Here is a useful chart of "working distances" (WD):</p><p><a href="http://www.jeffree.co.uk/pages/macro-lens-calcs.html" target="_blank">Macro lens calculations</a></p></blockquote><p></p>
[QUOTE="WayneF, post: 202685, member: 12496"] The 40mm specifications include that the minimum focus distance is 6.4 inches, but this is always measured to the focal plane mark near the rear of the camera body (the O with a line through it, about even with the rear of the top LCD). The distance in front of the 40mm lens at 1:1 magnification is more like only 2 inches (called macro working distance). For the 105mm VR macro lens, this working distance increases to nearly six inches. Here is a useful chart of "working distances" (WD): [URL="http://www.jeffree.co.uk/pages/macro-lens-calcs.html"]Macro lens calculations[/URL] [/QUOTE]
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