Pentax K-7 Handling and Feel – Initial Impressions by Wheatfield – Wheatfield compares the K7 to the K20D:
It feels smaller than the K20, but at the same time, just as substantial. It does fit my hand better, and the vertical grip is more rounded on the front, making it more comfortable as well. There is more grip to grip, so to speak. There are a LOT more menu adjustments, but they’ve done away with the pagesand pages of depth, instead opting for a tabbed style of menu, with only one page of depth per tab.