Popular Photography has a test up of the highly-rated and digital only Sigma 18-50 f/2.8 macro lens:
For tabletop shooters who like to reach out from the camera position to reposition or otherwise manipulate their subject, this 1:3 macro is probably the closestfocusing lens in its class. Read more . . .
[tags] sigma, 18-50, macro, f/2.8, lens, review, test[/tags]
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