Originally posted by Ian Stuart Forsyth Not all wildlife and sport photography needs a high frame rat
Squirrels need a high frame rat if you want good pictures.
(IIRC cropping is best with a high pixel density per square mm and plenty of light to saturate those pixels. APS-C and smaller formats get better and better the stronger the light. Some of the loveliest photos I've ever taken of my kids have been with my smartphone in near-ideal lighting conditions, but that conjunction of circumstances is pretty darn rare.)
If Pentax were annihilated from all creation throughout all time tomorrow, I would buy a D500 for workaday and a Df for fun (Crazy expensive and "only" 16MP on full frame, but dripping IIRC with ancient legacy lens support).
Pentax's AF now is surely better than Nikon's was when sports photographers first started loving Nikon DSLRs. Or is it?