Samyang AF 24-70mm f/2.8 Sony FE Fit Lens first Auto Focus Standard Zoom lens equipped with various functions optimised for video shooting that is different from other standard zoom lenses. Especially, it features a par-focal function, the focus position does not change even when users zooming in or out, therefore, it meets the needs of shooting for both stills and videos for various purposes. Among the 17 elements, Samyang used 9 special glasses, and premium material is adopted for the barrel. And it features weather sealing on 7 different spots in order to protect the lens from light rain or dust. Also, Samyang use the Linear STM motor for a fast and accurate AF to respond to track shooting with eye recognition and face recognition.