Upload & Sell: On
Noise is a personal thing. I have no issues with the OM-D up to ISO 3200, and I will even use higher ISOs without much thought if I need to, but I personally don't mind a bit of grain in my images (especially since it's rarely visible in print or on the web). If well exposed, ISO 3200 can make very good 11x14s in my opinion, and ISO 6400 can even make very good 8x10s. Higher ISOs definitely get noisy, but if you don't mind a little grain, even ISO 12,800 is fine for black and white shots at moderate print sizes. If you want baby smooth images, then you won't get those at ISO 3200, but I don't mind the noise at 3200 through Lightroom.
For instance, these are all at ISO 6400:
And this is ISO 10,000:
ISO 1600 by candlelight (with Voigtlander 17.5 f/0.95) at 1/8 second (love that IBIS):
ISO 25,600 is generally a step too far, as there is color shifting and a flatness to the images...plus plenty of noise...but they can still help get a shot: (motion blur of the subjects is simply as a result of the extreme low light..max aperture with the 12-35 f/2.8 and max ISO...the children and the 'sub' were moving).