Considering shadow detail, off the top, the Panasonic, while very good, is at best, the equal to the Sanyo, which is not a bad place to be. Overall, be it due to gamma, or other issues, the Sanyo reveals more shadow detail in very dark areas. Of course, like most issues, this can be affected by user settings. Using Cinema 1 mode, I found that the darkest areas that should reveal detail, were just too dark. After raising the Panasonic's Low Gamma and Mid Gamma, each to +1, I found it helped. Still, as you will see in the satellite image below, the dark areas are still very dark