I have had the Tamron

I have had the Tamron 70-300mm DI and loved it, and yes you do have to watch out for CA wide open. I sold mine as it wouldnt fit the A200 and opted this time for the Sigma 70-300mm APO DG, I have to say they are both very good lenses, and very reasonable in price. I have yet to see any CA with the Sigma but I am sure given the right conditions it will rear its nasty head.

Terry.

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