Equipped with a Focus Limiter switch, users can limit the focus range during AF for more precise results. Three AFL buttons on the body of the lens can be customised to a wide range of preferred functions via the camera menu. The AFL buttons are easy to operate regardless of how the camera is oriented or which settings are used. On the L-Mount version, the SIGMA USB DOCK UD-11 (sold separately) can be used to set OS operation or the focus limiter range.
The lens body incorporates an Arca Swiss-compatible magnesium alloy tripod socket. The leg can be removed and replaced with other interchangeable tripod sockets (sold separately). A lens hood is included and equipped with a lock mechanism. A rubber grip makes it easier to attach and remove the hood and zoom in and out using push-pull zoom.
The L-Mount version of the lens is compatible with the SIGMA TELE CONVERTER TC-1411 (1.4x) and TC-2011 (2.0x), allowing AF-enabled shooting at ultra-telephoto focal lengths of up to 1200mm.
The mount connection, manual focus ring, zoom ring, switches, switch panel and exterior connection are all dust and splash resistant to prevent dust and dirt from entering the lens. In addition, the front element features a water- and oil-repellent coating to make the element easier to clean when it gets wet or dirty.




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