I already have a K-3 that is getting tired and it didn't seem worth it cost wise to get it fixed. The KP does have slightly better high iso performance but i wasn't impressed at it's lower iso except for product shots and i did mention in another thread i had to return my KP to have a loose cable fixed which had to do with the accelerator chip. I have larger hands so yeah that is also a factor. The K-3 i find is a bit quicker to adapt to random instances than the KP although the KP 's AF is a bit quicker i don't find it as accurate and it reminds me of my K200D that is always off a little in the AF no matter how much you calibrate it or which AF type you choose. I have experience with other cameras that use the high iso accelerrator electronics and there is something to be said for doing the work yourself. I like the KP better for perfectly static subjects but it doesn't seem realistic to niche a camera for just that, the Nikon D500 i had was very aggravating outside it's comfort zone. The only Nikon i've kept is the D750. Several local real estate companies have bought KP's based on seeing mine and the KP for taking images of homes and businesses for sale is excellent even the local municipality uses Pentax to do their surveys.
As for the difference between the K-3 and KP people keep asking about for myself the K-3 came out as more adaptable on the fly which is important for me even if it didn't have 8.3fps.
I will give the KP and the K-1 the advantage over the K-3 when it comes to not blowing highlights as much in the sunny outdoors. However in turn that too created random problems that were only partially fixed by the loose cable repair.
Lastly the K-3 doesn't have gps and it has a built in flash that is better than that of the KP even if it use remote flashes most of the time again the k-3 built in flash is a backup tool. The KP flash is harsh and too focused and i ended up sticking a piece of translucent tape over it in order to defuse it a little, otherwise it was "deer in the headlights" kind of aggravation and strangely enough the older Pentax built in flashes are better, go figure.
The K-3 is more for "in for the long haul".
As BigMackCam explained it's not an upgrade or downgrade between the KP and K-3.
That should cover it, i hope.
Last edited by solitudebound; 01-19-2018 at 04:21 PM.