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Sigma 18-35mm F1.8 DC HSM preview updated with lens test data
We've just updated our preview of the Sigma 18-35mm F1.8 DC HSM with lens test data, courtesy of DxOMark. This lens has generated a lot of excitement as the fastest zoom ever made for SLRs, but the big question is whether its speed comes at the cost of optical quality. We've looked into this by comparing the 18-35mm to some current benchmark designs - and the results may surprise you. Click through to read all about it.