Originally posted by btnapa Also got a new Tamron 70-200 last week. I wanted to grab one before Tamron pulled the plug on it. I was not sure if it was going to be good enough. I guess I got lucky because mine is sharp across the frame and super sharp from f4 on. I also borrowed a 17-50 f2.8 and shot with both. Pro class images from both lenses and perfect color matching. The 70-200 is noisy but focuses accurately and it is pretty fast too. The cost of Tamron combo (used and new) is below $1K. I am not sure how much more image quality you can get from a Pentax combo (70-200 f2.8 and 16-50 f2.8) that costs almost three times as much.
Yes, I too have a 17-50 2.8 and it is really spectacularly sharp. I recently did the 16x48 inch print comparison vs the 6D and $1000.00 24-70 L Canon lens, with it.
The 70-200 went back to B&H today... I asked for an exchange so a new one should be coming along in a week or two. I hope it's a winner!
---------- Post added 10-15-15 at 09:09 PM ----------
Originally posted by btnapa Also got a new Tamron 70-200 last week. I wanted to grab one before Tamron pulled the plug on it. I was not sure if it was going to be good enough. I guess I got lucky because mine is sharp across the frame and super sharp from f4 on. I also borrowed a 17-50 f2.8 and shot with both. Pro class images from both lenses and perfect color matching. The 70-200 is noisy but focuses accurately and it is pretty fast too. The cost of Tamron combo (used and new) is below $1K. I am not sure how much more image quality you can get from a Pentax combo (70-200 f2.8 and 16-50 f2.8) that costs almost three times as much.
Good copies of the Tamrons are WORLD CLASS lenses. As good as any ones top of the line models in terms of IQ. At least that's been my experience. The trick is getting a good copy. My 17-50 will never be sold.