Found these little fellows from our backyard. This is shot at ISO 3200 in very dimly lit woods. The result is not bad, I think. Of course there is noise but it is quite pleasing in appereance and color tones are nicely produced even at high ISOs. This is one of the main things which make Fuji X100 to shine. I can use auto ISO all the time and not to worry about noise or color rendering.
And this is just a very quick snapshot. Handheld. Not any planning before shooting. Just shoot. Aperture mode f/5.6, auto ISO, no flash. JPEG.