This is my Empire State Building pic after a bit of post proc. The sky and the building were levelled seperately, and a graduated mask used to lift the tones in the part of the building towards the bottom of the frame. The pic had a lot of noise, being shot at iso 1600 and it was under exposed to maintain a sensible shutter. So, I put through NeatImage, with default parameters. This has reduced the noise to an acceptable level for screen display, but this one will never make a big print!