Similar to what I did last time for the 645D, here is an updated comparison with the addition of the latest hot Full Frame cameras from Canon and Nikon (4/5 Nos.) and also the Pentax K-5/K-01 plus the now somewhat old Leica M9, total of 12 models:-Camera / Digital BackSensor Size (in mm)Sensor Area (in mm^2)TypeResolution(Effective)Aspect RatioTotal Mega PixelsPixel Pitch Size (in um)ISO
