Meet Sigma's First Full-Frame Mirrorless Telephoto Zoom Lens

The 100-400mm F5-6.3 DG DN OS Contemporary lens is Sigma’s first full-frame mirrorless telephoto zoom. Though the previously released 100-400mm f/5-6.3 DG OS HSM lens is full-frame, you need add an adapter for mirrorless cameras as it's only available in Sigma A, Canon EF, and Nikon F mount. Besides this latest telephoto lens, Sigma released three primes for L-mount and two new teleconverters for L-mount. 

The 100-400mm F5-6.3 DG DN OS Contemporary lens becomes the 5th DG DN lens from Sigma. For the uninitiated, DG stands for full-frame, DN denotes a high-performance lens designed exclusively for mirrorless cameras, and OS is optical image stabilization to reduce camera shake. 

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Sigma's current DG DN lineup

• 35mm F1.2 DG DN Art 
• 45mm F2.8 DG DN Contemporary 
• 14-24mm F2.8 DG DN Art 
• 24-70mm F2.8 DG DN Art
• 100-400mm F5-6.3 DG DN OS Contemporary 

Optically, the lens has 22 elements in 16 groups with one FLD and 4 SLD elements. It's designed for cameras with a short flange distance and the stepping motor system is optimized for both phase detection AF and contrast AF, making shooting with the video or eye tracking AF quite smooth. Additionally, the lens does offer image stabilization of 4 stops. When paired with a camera body with image stabilization built in, like the Panasonic LUMIX DC-S1H, the lens will correct pitch and yaw axis rotations for even greater stabilization. 

The lens has a AFL button that the user can use to customize select functions on the camera side, and there's a focus limiter switch to optimize the AF range according to the shooting environment. When adjusting focal lengths, the lens barrel does move, meaning it's not an internal zoom lens. Sigma has added a zoom lock button to eliminate any barrel movement during transport. The lens is comparable in weight at 40.0 oz (1,135g) making it ever so slightly lighter than 100-400mm DSLR counterpart. It's available in L-mount. 

The Sigma 100-400mm F5-6.3 DG DN OS Contemporary will be available on July 10, 2020 for $949.00 USD.

In addition, Sigma has released a USB docking station for L-mount and Canon EF-M lenses. The Sigma USB Dock UD-11 allows users to update firmware and customize settings on lenses in these lineups. In addition to firmware updates, users can adjust the sensitivity of MF function speed on compatible lenses. It uses a USB Type-C connection. Both versions will retail for around $59 and will be available July 10, 2020.