Well, a whole day done with the D600 and 24-70mm walking around Disneyland. My back is sore, my feet hurt, but I had a lot of fun using the D600. I can't put all the blame on the D600 for a sore back, as that occurred even in past trips with the K-5. Anyhow, neither camera can be considered small or stealthy when matched with their respective fast aperture zooms (f2.8). Just a couple samples here, I'm tired now and will post some more later. All are .jpg as I currently don't have the raw converter on my laptop. Full sized versions by clicking on image to get to flickr:
Exposure 0.006 sec (1/160)
Aperture f/3.2
Focal Length 52 mm
ISO Speed 100
Exposure 0.013 sec (1/80)
Aperture f/2.8
Focal Length 56 mm
ISO Speed 6400
Exposure 0.001 sec (1/1600)
Aperture f/4.0
Focal Length 58 mm
ISO Speed 140
Exposure 0.008 sec (1/125)
Aperture f/2.8
Focal Length 26 mm
ISO Speed 1600
Nothing tests high ISO like Pirates of the Caribbean. ISO didn't register for some reason, but I think it was on Hi 2 which I believe is 25,600.
Exposure 0.017 sec (1/60)
Aperture f/2.8
Focal Length 70 mm