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Using Levels

Using Levels - GIMP Tutorial

From the course: GIMP Essential Training

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Using Levels

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- [Instructor] Let's continue our look at retouching images by seeing how to use levels in GIMP. Most often you would use levels to control the brightness values throughout an image or a selection. And let's start by opening the Levels dialog by choosing Colors, Levels. The dialog box has two main controls, the Input Levels sliders and the Output Levels sliders. Generally speaking, the Input sliders will always increase contrast in some part of the image, and the Output sliders will decrease contrast throughout the image. These ones have traditionally had uses in print work where the limitations of print technology could not represent the lightest and darkest detail in an image. These levels are used to compensate for those problems by lightening the darkest pixels and darkening the lightest ones. So, they preserve the shadow and highlight detail in print output but at the cost of reducing overall contrast, so the image looks flatter, and you would know what amounts to set here by…

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