"Rob Brigham" <[EMAIL PROTECTED]> wrote: >There were several versions (at least 2 anyway) - the EX ones are pretty >good, but before that less so. You need to check that the rear element >of your lens will not crash into the front element of the convertor as >it stands proud of the housing. Sigma have a compatibility table on >their website for their own lenses.
I have the EX 1.4 Sigma and it seems pretty good. Works well with AF and MF lenses. Even works with the 80-200/2.8 The Sigma 2x will physically fit on the 80-200 but the lens won't focus to infinity for some reason (and it's an IF lens so it isn't a mechanical reason). -- Mark Roberts Photography and writing www.robertstech.com
