...GF1 and G1... ISO 3200 is not so good, in my experience. Really not usable.
Of course, my expectations for image quality may be much lower than others'.
Thinking about the performance I get from my own CSC v 5D and my own particular problems of higher ISO performance and actually using the cameras in low light I've convinced myself that from what I've seen on line the newer CSC's will provide good enough image quality for me to produce prints up to A3 at all ISO's up to and including 3200 and probably higher too with care.
I thought I'd check again the performance of my G1 at ISO 3200 but as I take very few shots at this setting I turned the light off and took the following test shot, ISO 3200, 1/2 sec. At the settings the camera chose it looked too bright to me and was also noisy. The exposure needed to be adjusted -1 and the darks and shadows set to -50 to produce a shot that still looked a little brighter than it looked to my eyes and more detail is still visible than I could actually see by eye, there is some blur because I couldn't hold the camera steady at this shutter speed. This is what I got...
Here's the NR screen in CS5 showing ho-hum hardly heroic or extreme settings, in fact the NR could probably be pushed higher for a cleaner final image...
If I can get this from an elderly G1 with little effort I think that I'll be perfectly happy with the image quality of any of the newer CSC's at higher ISO's and the lenses look good to me too. So the only questions I now face are can I live with fly by wire no marking lenses (although I mostly use legacy lenses I do like to have a couple of newer AF lenses too) and can I feel comfortable using an EVF in low light.
If I can find a newer CSC I feel comfortable to use in low light I think I would take it night fishing in Kazakhstan
and not have any worries about actual image quality but perhaps my expectations are lower than others
I'm sorry for taking this thread more than a little off track but hopefully no one minded...