Interesting....
I did not expect the K3 to be so good.
It manages to cling on to detail even on the textured grip area.
Its grainier, but I don't care much about it, preferring that to a noise re,duced 'painting'
K5 seems to have lost quite a bit of detail, but less grainy o/p.
I am surprised that it 'lost' to the K3 despite the claims about the 24mp sensor being noisier.
Ok.. it is, but the details captured allow the user to adjust to taste later.
Q?
Ha..ha.. Normal viewing and/or B/W, I still think its ok to get to 6400 if its the only camera with me.
D800, better, but so close to K3, which is the biggest surprise here.
As I said, I don't care much about the graininess, so those who do will have a different interpretation of the results.