Originally Posted by settecplus
About the difference between the image in lightroom and in the browser, well, there is. It's not a big difference, but indeed is there. Since I'm a newbie lightroom user, and have the chance to test it just on a friend's pc, maybe it's just my fault
True, images will look different on un-calibrated screens. I'd recommend grabbing a copy of Parallels or VMWare Fusion. (They both have free trials) That way you can run Windows on your Mac and test out your site in IE on the same monitor. And chances are, the image should look exactly the same as it does in Lightroom.
Also, I'd recommend calibrating your monitor to Gamma 2.2, as the majority of the public uses this. Mac's ship with the Gamma set to 1.8, which is fine and good, until you start doing work that will be viewed on other operating systems, like Windows.
Hopefully this will help you with your quest for perfect images for the web.