I tested Sigma's f/1.8 zoom for APS-C cameras for a month – it's a prime lens killer with one drawback

The Sigma 17-40mm f/1.8 DC is a majorly impressive zoom lens, and fills a huge gap especially for the Canon RF-mount ...
Ars Technica

How to actually use the Sigma USB Dock to adjust focus issues?

So I purchased one of the new Sigma 18-300mm F3.5-6.3 DC MACRO OS HSM Contemporary lenses for my Canon T1i and the USB dock to make adjustments/updates. There is some definite back focusing at middle ...
Streaming Media Magazine

Review: Sigma Cine Lenses

In this review, we’ll look at the Sigma line of cinema lenses. I have three of these lenses that I've used recently on a real-world shoot with this Blackmagic URSA Mini Pro 4.6K. Two are from the high ...
Yahoo

Sigma 150-600 Contemporary vs Sports: let us explain the differences

The Sigma 150-600mm f/5-6.3 DG OS HSM Sport and the Sigma 150-600mm f/5-6.3 DG OS HSM Contemporary sound and seem remarkably similar - so choosing which is best is not obvious. Both of these Sigma ...