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the auto focus of this lens is very slow because this is a third party lens, and you need a bright light or video light to get the focus right.. what i did is use it in manual mode.. use your cam’s eye piece... or you can upgrade your lens to f2.8 or below...
Sorry, there was a problem. Please try again later.you could have possibly received a faulty lens, the censor could be dirty which would cause it to function incorrectly.
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