I have a bunch of travel photos that I was forced to shoot at high ISOs. I'm a noob at Lightroom, and would appreciate any tips on how to use the noise reduction function effectively. I know where the slider is, and I know how to push it from one side to the other, but that's about it. I have several LR books, but they tend to tell you how to use every function but not how to use them all well, so that the image comes out looking good. (In particular, I find it hard to know when to stop.) I'm a bit crippled by working on a 13" MacBook screen, which makes it hard to judge by eye (and my eye is still very untrained). I browsed through the high ISO image thread and found a lot of mentions of DxO Pro. When I get back to my home computer, I'll download the free version of DxO Pro. I have no experience at all with DxO Pro, so any tips on making most effective use of its NR would be much appreciated. If there's another inexpensive program that you think does a better job of noise reduction, feel free to recommend it. Many thanks!