solid built
fast focus
sharp image
very good PQ value
缺點:
can\'t expect too much for this price, only F4.0 is a bit too slow
評價:
at first, I\'m considering sigma 70-200/2.8 for it\'s F2.8. However, finally I chose this lens and it\'s performance won\'t disappoint me. It\'s a good lens for good built, fast focus, sharp image and high PQ value.
If you\'re not necessary to use F2.8, this one should be definitely no other choice. add $3000+ for IS is not worth, in my opinion, because you can use higher ISO to obtain faster speed nowadays for all those DSLR.