I am just blown away. There's another thread here about shots with this Tammy lens wide-open, but I figured I should start a new thread because I'm actually testing out how this lens performs with a Teleconverter. And to me, the results are astounding. I don't think I've ever owned such a high-quality zoom lens.
The teleconverter I'm using is a Promaster 1.7x AF, which turns the lens into roughly a 120-340mm f/4.8. Autofocus is pretty slow, and hunts quite a bit with this combo, but it's still usable. However, even if it was MF-only I'd still be thrilled with it, because the image quality, well... take a look yourself! These are two shots I just took out in the snow, with light touch-ups in gimp. Both are with the TC,
and at f/2.8!
Anyone else have any experience with this lens and a TC? I'm really shocked by how well it holds up, and I'm looking to push it to the limit and go a bit longer if possible.