Ice Flow
Here is a great noise reduction tutorial that can be used in all later versions of Photoshop. I have never bought noise reduction software as I don’t shoot at high ISOs, and now have even less reason to do so. Gaussian Blur is a Photoshop only thing it uses more complex logarithms than a normal blur filter, to give a more even blur. Andrew uses Gaussian blur in his technique. Noise levels are getting lower and lower with each DSLR release and this technique should be all that is required now a days.
The tutorial can be viewed HERE
