This lens only has a 0.74x multiplier which is barely noticeable. If you need autofocus that badly, go for it. It delivers what it advertised: it gives you a fish-eye effect, but as I mentioned, it's not wide enough. Those who don't mind manual focusing are better off with the Rokinon 7.5mm, which is a better buy in the long run. I have one and didn't like it. Looking for sale. Update: I sold it. I still have my Rokinon Fisheye and I really like it.
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