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Title: Will not Autofocus
Review: This lens will not autofocus under any circumstance at all. I returned it thinking it wasn't working properly. I knew that it wouldn't autofocus in dim light situations, but from what i had read bright light situations should have been ok. I was buying it to use on my Canon Rebel T3i. I have 2 Tamron lenses, both brand new to use it with.The camera store that shipped the order for Amazon called me and explained that the teleconverter adds to f stops the the lens you are adding this to. I was told this teleconverter would never autofocus on any lens in any condition ever. I had tried different settings, in different lighting situations and found that it would not autofocus ever.This information isn't mentioned anywhere on the Tamron website. It isn't mentioned in any reviews anywhere.
