Originally posted by Ash How does the DA*300 and teleconverter combination work in AF? Is it better on the IIs than with previous cameras?
That was one of the first things I tried, using the DA*300mm + Kenko Pz-AF 1.5x TC. Unfortunately, it's still as bad as the K5 so no improvement at all. I think it's down to using PD-AF as when I switch to Liveview, using CD-AF, it snaps to focus first time. That's why I use the Pentax 1.7x AFA more, not only for the longer reach, but also for easier focusing.
My Bigma works well with the Kenko TC and focuses a lot better than the Pentax SDM lenses, without any hunting. Maybe that's why Pentax hasn't yet released the long awaited 1.4x TC that's been on the roadmap for years, they just can't get it to work properly?