• Uncompromising image quality
• Lightweight and compact lens body
• A dual-action zoom system with push-pull zoom and twist zoom
• Two-mode Optical Stabiliser offering a four-stop advantage
• Focus limiter switch and customisable AFL button
• Weather sealed
• Short focusing distance of 112cm at 100mm or 160cm at 400mm for close-up photography

With the optics design specifically for a camera with a short flange back distance, the DG DN series of lenses achieves a supreme combination of optical performance and compactness that could not have been possible with lenses for single-lens reflex cameras. Thanks to the stepping motor system that is optimised for both phase detection AF and contrast AF, the Sigma 100-400mm f/5-6.3 DG DN OS Contemporary Lens makes shooting with the video or eye-tracking AF very smooth.

A control algorithm including AF drive and communication speed optimization has been developed specifically for X Mount interchangeable lenses. In addition to realizing high-speed AF, the lens also supports AF-C (Continuous AF) and in-camera aberration correction*. The mount is rubber-sealed to cater for use in a variety of environments. (*Function available on supported cameras only. Functionality may vary depending on the camera model.)

The lens construction of the SIGMA 100-400mm f/5-6.3 DG DN OS Contemporary Lens comprises 16 groups and 22 elements, with one FLD and four SLDs used for the effective correction of aberrations and distortions. Built on the latest optical design technology and optimised for mirrorless systems, the new lens ensures the same high-resolution image quality all the way to the edges. In addition, it constantly achieves high levels of optical performance and makes the most of its capabilities as a zoom lens in any condition, at every focal length from wide to telephoto, and from close-up shots to telephoto photography.

In addition to a high-speed and smooth AF enabled by the stepping motor optimised to the latest algorithm, the SIGMA 100-400mm f/5-6.3 DG DN OS Contemporary Lens incorporates powerful image stabilisation (OS) of four steps built into the lens. When combined with a camera body with image stabilisation built in, the lens corrects for pitch and yaw axis rotations, providing even more powerful image stabilisation.