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My new favorite lens. Makes everything look better. Focuses fast on my A7s2. Its a bit hard to focus for video (manual), but I think thats more an issue with the Sony cameras LCD screen. I love the lens though. UPDATE: For video, the focus by wire is a hassle and its nearly impossible to rack focus. It takes me 4-5 attempts whereas with Canon lenses I could usually get within 1-2 times. (the focus by wire basically means the speed at which you move the focus ring will change how much the focus changes)