Jayson, or anyone for that matter, is the 20-105 2.8 better than the 28-75XR? Or are they a suited for different purposes? I have been debating on a lens to become my main lens for my 300D and I had the Tamron 28-75 2.8 as my leading candidate because I have heard that the focus speed is very good and that the lens is pretty sharp, but I have seen more people mentioning the 28-105 recently so now I am unsure.
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