For Tamron, if it is the 2x SP F System then it is good, very sharp with a
bit high field curvature but ok if you stop down to F4. Otherwise, the 4
element 2x are similar to the others with just so so performance.
C.H.Ling
----- Original Message -----
From: "John Hudson" <OM4T@xxxxxxxxxxx>
>
> Thanks Tom.
>
> There was also a Tamron 2X converter in much the same condition and for
> the
> same price. Would that have been a better quality device to have bought?
>
> John
>
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