This scene is an extremely high contrast scene ranging from direct sunlight reflecting off of polished steel to dimly lit black fabric falling into shadows. This scene represents an extreme setting for a camera to capture, far more extreme than the typical scene one might wish to capture - but as such, makes a good test to see how much highlight and shadow data can be recovered from the RAW files generated by the G5 and the E-M5. All variables were held constant except the camera bodies. RAW captures, shot with Pana-Leica Summilux 25mm f/2.4 lens set at f/8, ISO 200, with a tripod. First up, two images with simple processing in LR 4.2 RC. E-M5 E-M5    ---    25mm    f/8.0    1/40s    ISO 200 G5 DMC-G5    ---    25mm    f/8.0    1/40s    ISO 200 And now, with the highlight recovery at -100 and lifting shadows at +100 E-M5 E-M5    ---    25mm    f/8.0    1/40s    ISO 200 G5 DMC-G5    ---    25mm    f/8.0    1/40s    ISO 200 Impressions are that the G5 and E-M5 are remarkably close in their ability to capture data in the extremes of dynamic range, which is recoverable in LR 4.2RC. The most obvious difference between them being the color shift in the recovered deep shadow areas with the G5. In this aspect the E-M5 sensor makes a better showing. And there is a bit more data recovered in the extreme highlight area with the E-M5. All in all, though, the DR of the two sensors are not far apart. The demands made by such a test are not likely to be needed with the vast majority of image capture generally done, but it's nice to know that both cameras are capable of recovering a remarkable amount of data in the extremes!