June 26, 2019
Sigma MC-21 Mount Converter Canon EF-L review
Sigma's mount adapter allows Canon EF lenses to be used on L-mount bodies, but has some quirks and flaws
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November 23, 2018
Sigma 60-600mm f/4.5-6.3 DG OS HSM Sport Field Test
Michael Topham field tests Sigma's latest telephoto zoom with a maximum reach of 600mm
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August 6, 2018
Sigma 105mm f/1.4 DG HSM review
Is this the most impressive prime lens in Sigma's f/1.4 Art series to date?
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November 15, 2017
Review: Sigma 135mm f/1.8 DG HSM Art
It may not be lens that most enthusiasts are likely to buy, but it would be worth hiring... Read our full review of the Sigma 135mm f/1.8 DG HSM Art
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April 10, 2017
Sigma 85mm f/1.4 DG HSM Art review – AP Gold Award winner
Michael Topham is certainly impressed with the new Sigma 85mm f/1.4 DG HSM Art - find out why
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March 8, 2017
Sigma sd Quattro review
Andy Westlake tests Sigma’s unconventional SA-mount mirrorless camera, the sd Quattro
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February 9, 2017
Sigma 500mm f/4 DG OS HSM Sport Field Test
Michael Topham tests Sigma's new flagship telephoto lens on a wildlife assignment
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December 8, 2016
Sigma 12-24mm f/4 DG HSM Art review
Michael Topham puts Sigma's latest ultra wide-angle zoom through its paces
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June 2, 2016
Sigma 50-100mm f/1.8 DC HSM | A Review
Michael Topham puts Sigma's latest zoom with a constant f/1.8 aperture to the test
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November 23, 2015
Sigma 20mm f/1.4 DG HSM | A Review
Sigma has created a world first with its latest wideangle prime lens. Michael Topham puts it to the test