Upload & Sell: Off
Right Snapsy, gotcha. Well done.
Here is a sample from this morning, containing a darker element (shadows). The crop shows 25% of the original frame (50% crop in each direction).
You will notice the horizontal banding in the shadow area. Topaz DeNoise5 takes care of it.
[Edit: Please note that this is only possible to cleanup so well because the dark areas don't contain the subject. If I would underexpose a face at ISO12800 there's not much you can do. It's going to look awful no matter what PP you do. This is why I always use Manual Exposure and spot metering on faces, especially when using high ISO's like this.]
5DmkII ISO12800, LR4.1 Adobe Standard, standard NR
5DmkII ISO12800, LR4.1 Adobe Standard, standard NR + Topaz DeNoise 5 (moderate) in dual layer Photoshop CS5