Nothing special about the shot, just testing out the new (to me) Zuiko 11-22 lens I bought today. I met the seller at a coffee shop and took a couple of sample shots at ISO 1250. I have always been a bit hung up on 4/3 high ISO noise issues, but I think this shot shows that you can get perfectly acceptable shots at relatively high ISO settings.

Two images, both shot in RAW, both handheld at 1/20s and F2.4. One underexposed at ISO 50, the other properly exposed at ISO 200. The (originally dark), underexposed ISO 50 image has been heavily brightened up in post-processing to make it as bright as the ISO 200 one.

Both images were converted from RAW to JPEG with the same noise reduction settings.

In theory both images should have the same noise levels. However surprisingly the underexposed ISO 50 one is considerably less noisy than the ISO 200 one.

By the way, the above shots are both 100% crops.

panorama.