Originally posted by and I have the APO DG version.
Well its my impression that the Tamron 70-300 is not too bad. And of course we have to remember these lenses are really cheap, I didnt pay a lot for mine so we cant really expect that much.
The 50-200 is also very cheap but seems to do a better job since it more realistically stops at 200mm. I believe pentax has a 70-300 on the roadmap but god knows when that will be out...
They already have a 75-300, but it's a bit slower and seems to get pretty bad reviews. Interesting that the cheapest of the 70/75-300 zooms is from Pentax themselves and not a third party.