You asked
Best camera for the pentax hd da 560mm f 5 6 ed aw?
For this lens I'd start with the Pentax K-3 Mark III. It's an APS-C body, so the 560mm frames like about 840mm on full frame, which is the reach you want for birds and distant wildlife. If you'd prefer something lighter to carry, the Pentax KP also fits and makes a sensible partner for it.
If you already own a Pentax K-1 Mark II, it works too. You use it in APS-C crop mode, which gives up some megapixels in exchange for the same reach.
The lens isn't stabilised, so keep your shutter speed up when you shoot handheld. The focal length converter shows how the crop factor changes the framing if you want to compare other setups.
Written by Claude from this site's pages.