I recently discovered yet another perk of my Q10 over either my Olympus E-M5 or my Panasonic GH-1.
It seems to pretty clean with the R72 than either camera (Definitely more sensitive than the GH1, about the same sensitivity as the E-M5, but with the added ability to drop down to ISO 100). The GH1 has a stronger high pass filter, so exposure time is so slow that you can't do video with it, where as the E-M5 can do video with the ISO cranked up and still do 1/30th f/1.4 in broad daylight, but lacks some of the subtle details, whereas the Q10 seems to be a stop more sensitive than my E-M5 exposure, but gives a cleaner result to my eye at ISO 100. (This might simply be because the Q10 has slightly higher dynamic range than the E-M5).
Plus it seems like the 01 Standard Prime is just pretty well suited for it, but I'm waiting for a super bright sun-all-out day so I can test against things like hot spots and internal reflections, but if the outside shot with the sun to my back is any indication there seems to be very little hot spot for the 01 prime (the equivalent-ish Olympus 17/2.8 definitely has a hot spot right in the center, as does the Oly 12/2.0)
Inside before noon, tabletop tripod, 20 seconds, f/2.0, ISO 100
Outside, about half past noon (sun off to my right)
1/30th, f/2.8, ISO 100
Indoor just after midnight, only lighting being off a 23W (100W equiv) Sylvania 6500K daylight balanced CFL, which was my first test since I wasn't sure how clean it would be with the R72 filter (usually if it's insensitive but still shows an image, it tends to end up not so clean/crisp).
30 seconds, f/1.9, ISO 400
So I'm hoping to get out on Wends next week which is the next day that it's mostly sunny (it's storming or overcast round the clock until then).