Sigma 70-300mm F4-5.6 DG Macro
Telephoto zoom lens | Canon EF, Nikon F (FX), Pentax KAF, Sigma SA Bayonet, Sony/Minolta Alpha
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[Feel free to move the thread if appropriate.] Let's not go into the story of how I came to own these two items yesterday, as it wasn't by choice and was a lengthy, painful and expensive experience. However, once they came into my possession I thought that I would attempt to make the best of a bad situation and try them out. Long story short, I put the extender onto the lens just to play with it, found focus and took a couple of test shots, then unscrewed the extender and tried to use the...