Lens Review: Sigma 18-50mm f/2.8 EX DC Macro By
Andrew Alexander, The Imaging Resource
(Saturday, June 4, 2011 - 11:20 EDT)The Sigma 18-50mm f/2.8 EX DC Macro zoom lens serves as a good walkaround zoom lens, offering a constant and fast f/2.8 aperture through its zoom range. We've put the lens through its paces in our test lab: click here to view our full review of this lens.
