Originally Posted by Priyantha Bleeker
Well the 40D and the D300 are both weather sealed

And using also both a Magnesium body.
They also feel build tighter as the K10D

And because the K20D is the same body(the basis) there is no difference.
Priyantha, well, the K10D and the new one both use a stainless steel chassis with a fiber-reinforced polycarbonate body covering it. So, it's really a magnesium vs. stainless steel chassis comparison between the Pentaxes and the Canikons (since all use polycarbonate bodies...IIRC)
Thanks so much for the introduction to the new camera, Chris! I just got my K10D and think I'll be happy with it for a while, but it's nice to see some engineering momentum out of Pentax once again!