Sigma 50-150mm F2.8 EX DC APO OS HSM

Nice lens. Haven't shot portraits with it yet other than zooming in on people engaged in sporting or concert activity. The lens seems sharp and focuses very fast. On my D7000 it feels 'right', handles well and has enough heft to it to instill confidence while helping stabilize. Between chukkas shooting Polo, I practice focusing by targeting flying insects and the lens nails a lot of them. It''s a bit short for Polo given the size of the field so my 70-300 gets a lot of use on that but as the ...