Originally posted by dcpropilot The K-70 ad KP look like two excellent cameras. I didn't realize the K-70 photos where such a huge improvement over the K-3 and now I'm getting the urge to purchase one of them.
This is all about usability and expanding the envelope, not about capability. The K-3 is quite a capable body and delivers stunning results and is of course a much sturdier body than the K-70. It is only at extremes that the K-70 beats it in focusing speed and low noise.
I'm always very careful to not read too much into body upgrades, usually preferring new glass over new bodies. I would f.i. have bought another K-70 if the KP wouldn't have come down to such a ridiculously low price. IQ wise there will not be such a dramatic change.
So, judge carefully whether the extended envelope of the K-70 fills any gaps in your current photography and, if not, stick with the K-3 knowing it too is an awesome camera.