I have the sigma, decent built and good optics, the macro being stuck at 300 is a limitation, reports say the tamron is just as good with the 1:2 macro going further. The Sigma had a 1:1 adaptor ( which I have ) but you will have a hard time finding it . guess I just confused you more. OH both lenses are really F6.7 on the long end BTW.
--- [EMAIL PROTECTED] wrote: > > Hi All, > > I wonder if any of you have experiences of either > the Sigma 70-300 f/4-5.6 Apo > Macro Super or the Tamron 70-300 f/4-5.6 LD 1:2 > Macro AF lens - or preferably > both. Which do you think is better in terms of > optical and build quality? They > cost roughly the same, but the Tamron's macro > function can be engaged through a > broader focal length range (180-300 mm), whereas the > Sigma's is fixed at the > longest end. Any experiences? > > Thanks: > Peter Farkas > ______________________________________________________________________ Post your free ad now! http://personals.yahoo.ca

