Originally posted by digitaldevo What about the Sigma 17-70mm f/2.8-4 DC HSM OS?
Sigma - Lenses
Seems it would fit the bill nicely and you get a faster aperture over the Pentax and you also get the faster focusing.
It's not faster at 70mm though!
This is a tough one, because there are so many good lenses there, and there are a lot of applications where one will outshine the others.
For portrait, 77mm bar none. But the DA70 is pocketable and I found it to be better at infinity than the 77, so it would be nicer for landscape, street, etc. The Tamron 28-75mm is versatile and sharp, with great close-up capabilities and if you get a good copy, it can do it all. A little plasticky though.
Of those on the list, I've had the DA70 and still have the Tamron 28-75 and the FA77.
So are you going to buy one of these, or is it just for the poll?
There's the FA*28-70/2.8 which is big and heavy, but some people love theirs. I'd love to try one on day!