Hello I was given a great tip about a plug in that reduces noise - NoiseWare. It means that you can use high ISO settings and then clean up the images afterwards. I've bought plug-ins before and not been massively impressed - but this one is excellent. It reduces noise noticeably, but doesn't impact the detail too much - a balancing act that I've never been able to master. Here's a before and after. It's not the best photo - but it was the noisiest I could find. Don't focus on the swallow - look at the barn door - that's where you can really see the difference. I appreciate that it's not a massive difference - but it's certainly an improvement IMO.