Originally posted by ntrao That's the main problem. Now, all FF owners have to upgrade to new HD/high resolution lenses!!
The 42 MP camera's pixels are larger than the 24 MP K-3, if you don't see imperfections in the K-3, you won't see them in the Full Frame...lenses are way better than people seem to give them credit for. Now if you're just looking for an excuse to justify a purchase to your wife... she probably won't know any better.
The 51 MP Canon sensor should be about the same pixel size as the K-3.
A D810 is 14.8 EV DR, a Sony 7RII is 13.9 according to DxO. If Pentax can't squeeze an extra EV out of the sensor, I'm not sure how popular it's going to be with us landscape guys.