Canon 100mm f2.8 L Macro Review

100601_1830_dancarrCanon launched the brand new 100mm f2.8 L Macro in September 2009.  It’s not very often that Canon launches an entirely new lens, most being updates to already existing designs, so this was one that I wanted to check out as soon as I heard about it.  There was already a 100mm macro lens but it was not part of the famed Canon L lineup, so what is different in the design of this version to justify inclusion in the L category? 

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