Originally posted by swip
I use mine with the 1.7X autofocus TC. They work well together.
Yes, I got such advise to try finding this TC. However, I fear that the K7 will be the limiting component for a very rapid moving target like this one. Also, the weight of this lens is really a pain, I used a monopod and was sitting in a chair watching at the tree hole. Adding an additional 300 g is not something that I would do with such setup.
I plan in a near future to get a KP camera, perhaps the 1.7 x autofocus TC would be justified (if it is compatible).
Thanks