Lozzless demonstrates how to make a diy cheap macro lens with working aperture for his Canon 5D Mark II, coined the "SuperMacro".
According to Hack a Day,
"The process involves fashioning a connector ring from a lens cap, modifying an Electro-focus lens mount, and assembling the parts to do his bidding.."
(Personally, I don't have the know-how to break it down, but I love the thorough dedication of the tutorial and the test shots in videos 2 & 3 in the gallery below).
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