[matthew]

I don't know enough about the technology that's involved, but I suspect that there's a few different things to consider. One is simply battery power, as the D800 has nearly three times the shots-per-charge on less than double the power. The D800 has the hard cover over the screen, while the G11 has a 'soft' screen that seems to invite less glare. Or there's the different weatherproofing requirements, or even a components-cost issues… but that said, I suspect that my D800 is still better than my S100.