| I kind of agree with Lowell in here. Keep 24-70. It's big and heave but it's f2.8 zoom with very useful range. You'll find yourself in tight spot with 17-50 you want. Not just on the wide end. But sometimes you'll find it just too short. I know you want to get 50-135 but sometimes you just take 1 lens. And then 24-70 is much more usefull then 17-50. So my advice (talking zoomwise) get 10-20, keep 24-70 and get either 50-135 or 70-200 (both sigma and tamron are making f2.8 and I believe there is older but still veery good Pentax FA * in that range).
Anyway, I'm becoming "prime kind of guy" so take my advices with some reservation...
good luck |