The Sigma 135mm T2 FF High-Speed Prime Lens is built for professional filmmaking. Intended for Sony E-mount mirrorless cameras, the lens offers full manual operation via dedicated focus and iris rings that have integrated dampeners to minimize the metallic noise when they hit the end limit. You can rotate the focus ring up to 180° when focus racking at long distances. Refer to the Metric scale marking to alter the focus parameters. The clickless iris ring makes it possible to adjust the aperture during video recording. Both control rings have the industry-standard 0.8 Mod gear pitch to attach a follow focus unit. The lens gives cinematic bokeh in your portrait shots with the 9-blade diaphragm. You may fit different types of matte boxes to the 95mm front diameter. This Sigma lens works perfectly in harsh weather thanks to its dust- and moisture-proof metal body.