having recently bought a sigma ex 70-200mm f/2.8 dg hsm os apo lens im now looking for a 1.4 teleconvertor.
just wanted to know if the kenko pro 300 dgx will work ok with the lens.
I have the Sigma, Kenko Pro DGX 3000 and Canon MKII 1.4x converters and tbh I can see very little (if any) difference between the 3 when shooting with them on the Sigma 70-200mm OS on a 7D
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