Had to move the lens to my k-50 as the battery for the k-s2 was running super low and I didn't want to get caught out. I reset the k-50 firmware and reloaded it a while ago, but I feel like it hasn't been the same ever since
The user interface colours could certainly do with an improvement, if nothing else...
Going from k-s2 to k-50 seems to be a bit of a shock to the system, and I did not get many keepers at all.
This I think is the strongest I've got today.
And here is a secondary one - just so you can't say I never play the game
SMC Pentax 50/1.7 ,k-50