Originally posted by kyricom Thanks for your comments. I'm afraid getting a K-5 is out of the question. For that matter, getting a Kodak X-15 from 1970 would be out of the question after getting this lens. My wife would KILL me!!! :-) I could look for some software, though. I have Helicon Filter, but it's just a free trial (these shots haven't had any of that done to them though)
Ha, look a K-x (which are going for <$400 second hand) would be better than a K-7 in low light by at least a stop. Lightroom is ~$300 (available for free 30 day trial) which as well as De-Noising has fantastic cataloguing and editting functions.
Niks Define and TOpaz Denoise are great denoising software plugins, but unfortauntely you need photoshop, lightroom or aperture to use these programs.
There is also Noise Ninja and Noiseware, I'm not sure if they are standalone or photoshop plugins though.
Happy researching