248 CHAPTER 6 ERASING AND TOUCHING UP (Web design conference)
248 CHAPTER 6 ERASING AND TOUCHING UP Figure 6-29. Long exposures can create strange color casts, such as this purple sky. To be honest, I rather like the purple sky in this photograph. But what if I wanted to make the colors more normal? Hue-Saturation The GIMP has several ways of adjusting color balance. The simplest is Colors . Hue-Saturation… (in versions prior to 2.4, find the Colors menu inside Layer). You ll learn about the various color models in detail in Chapter 8. For now, all you need to know is that Hue represents the color of a pixel: whether it s red, green, blue, or some other shade. Saturation is how strong the color is: whether it s intense and bright, or washed out and pale. Value (shown as Lightness in the dialog) is how bright or dark the color is. For correcting color casts, Hue is the only slider you need.
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