Came across this earlier DR test of K-5 which also compares the DR of a 5D, 5D2 and 7D:-http://www.guillermoluijk.com/tutorial/noisedr/(Spanish, Google-translated English Page Here)via http://forums.dpreview.com/forums/read.asp?forum=1036&message=37056118So, in short we have:-And the dynamic range summary, by setting a 12 dB signal-to-noise ratio as the threshold limit:-As we can see from the
