This lens is completely unsuitable for video due to manual focusing via cable. The lack of true manual focus means no focus movements are repetitive or predictable. Worse, the speed at which you turn the focus ring determines the change in focus, NOT how far you turn the focus ring (like any other lens). did). It also doesn't have focus markers or focus windows; A glaring omission for such an expensive lens. So overall this is a very disappointing video lens and totally useless/unusable. Do not buy.
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