There have been numerous posts commenting on the fact that the Panasonic m43 cameras tend to underexpose images. Following the philosophy of ETTR (expose to the right), I very frequently add two to four EV clicks (1/3 EV each) to my images. This pushes the brightest part of the histogram right up snug to the right side of the graph. Doing this means that I'm getting the maximum amout of data for post-processing manipulation. (An excellent article explaining the reason for doing this is posted on the Luminous Landscape, http://www.luminous-landscape.com/tutorials/expose-right.shtml) However, when I review the images captured by this method in the camera using the histogram display, none of the color graphs seem to get into the upper 1/4 of the graph. Frequently, they are mostly in the lower half of the graphs, even though I exposed using ETTR. My question is, is the pre-shot histogram accurate? Has anyone tested what happens if you deliberatly over expose by a fraction of an EV, or has anyone done any meaningful comparison of the exposure levels in Photoshop or other PP software? Or, am I just misunderstanding something about the graphs? Bottom line, I'm getting good exposures, but I wonder if I'm maximizing the potential of the camera.