These are from our trip last week, no flash but a fair amount of color correcting for the ambient light. I carry a micro 4/3 camera so f/4 has similar depth of field as f/8 on full frame (or so I read). Also, Panasonic's premium 12-35 and 35-100 lenses are at their sharpest (which is very sharp) at f/2.8. Yep, wide open! So much for the old "stop down about 2 stops for best sharpness...".