Originally posted by bossa
The size of the shutter buttons and Mode Dial gives away that there is some perspective distortion at work here. I think you'll find that if you re-sized the K-3 so that the buttons & mode-dial matched the body size (width) will probably end up being the same. The lens is an add-on and as such we have no real proof that it is a fake or otherwise and as such should not be used for comparison.
Yes, I get the whole perspective distortion argument, and I know that we can try to size based on dials, buttons, and logos. But that's also based on the assumption that the sizes of those objects have not changed, and remember that we're working at low resolutions here so that trying to scale based on smaller objects leaves a lot of room for error.
In either case, I can see arguments for making the K-3 smaller than the K-5 (more competitive with the size of mirrorless offerings, leaves more room for a camera one level up (FF?) that's still smaller than competition, sell more grips, etc...). Likewise, I can see arguments for making the K-3 essentially the same size as the K-5 (it works, need the space for more stuff, etc...). Until the real K-3 comes out, choose the one you prefer!