I've got a GF2, and don't really like the images I get above ISO1600 (really prefer to keep it below 800 if I can). But in low light I also try to avoid using the flash, because it seems to suck the soul out of whoever I photograph! So, the solution I came up with (when there wasn't much light) was to keep the ISO down as much as possible, underexpose to keep shutter speed up, then adjust the exposure back (from RAW) in Lightroom as needed. But, some of the recent discussion about exposing to the right got me thinking... So I took a set of trial shots: same aperture/shutter, but I used ISO400 underexposed 2 stops, ISO800 underexposed 1 stop, and ISO1600 at 'correct' exposure. I then adjusted these in Lightroom so they were all about the same, and looked at full size. As far as I can tell - the noise in all is about the same! Does this make sense? Is ISO in the camera just digital gain, and does Lightroom just do the same thing in software? Can anyone with a bit more experience tell me whether I've been wasting my time fixing images I took at ISO800, when I should just take things at 1600 in the first place? Or, worse, does the camera actually do a better job at 1600 in the first place? Sorry if this is already covered somewhere - I did a bit of searching, and couldn't find anything. Thanks for help.