The tone curve often gets less use than tools like the exposure sliders or color grading panel, but it offers arguably more power, precision, and versatility than either of those aforementioned options, which is why every photographer should have some level of familiarity with it. This excellent video tutorial takes a look at everything you can do with the tone curve in Lightroom and shows you how to leverage it to take greater control over your photo edits.
[ Read More ](Originally posted by Alex Cooke)