Pentax K to Q-mount Adapter
Recommended Lenses
If you're on a budget, the M-series 80-200mm F4.5 or 200mm F4 lenses are great starting options that will give you plenty of reach. Both can be found second-hand for under $100. The DA L 50-200mm will also get the job done.
If you want more reach, you could try the DA 55-300mm (review here), or if you'd like to get the most out of your Q, perhaps the DA* 300mm F4 (review here).
There are plenty of other options for just about any need and budget, so we recommend that you browse what's available using our lens databases prior to picking up a lens for your Q.