I have just tried the new Sigma 150mm f 2.8 Apo Macro OS, a lens with excellent reputation not only among macrophotographers, but also among portrait shooters. However I tried it only as a macro lens, comparing it with the Micro-nikkor 105 f2.8 AfS VR as well as with its main competitor, the legendary Nikon 200mm f4 micro-nikkor AfD ED.
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