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Image Quality Sigma provided the lens in a Canon mount, so I used the 20-megapixel, full-frame EOS 6D ($1,999.99 at Amazon) to test the image quality it's able to deliver. We normally use Imatest to ...

The Sigma 150-600mm f/5-6.3 DG OS HSM Contemporary ($1,089) is a big, heavy lens. But that's no surprise when you consider its maximum reach, full-frame sensor coverage, and sturdy build. A strong ...

Weighing in at a whopping 1,930g and measuring 26cm in length, the Sigma 150-600mm f/5-6.3 DG OS HSM Contemporary is a pretty big and heavy lens, although it is almost 1kg lighter than the Sports ...