CHAPTER 10 ADVANCED COMPOSITING 385 Let s take (Shared web hosting)
CHAPTER 10 ADVANCED COMPOSITING 385 Let s take a look at some of the corrections you can make by compositing an image with itself. Using Screen Mode for Dark Images Sometimes you pick the wrong f-stop. Sometimes the camera guesses the exposure wrong. Especially aggravating, sometimes there just isn t enough light where you want to shoot such as in Figure 10-5. Figure 10-5. A dark indoor shot from Las Vegas When your picture comes out too dark, you can try to adjust the color, brightness, and contrast to get the perfect balance. But there s a much quicker way to get nearly ideal brightening. First, go to the Layers dialog and duplicate the Background layer. Next, change the resultant layer to Screen mode. Usually, that s all you have to do. In some cases, the result will be too light, but you can adjust that by turning down the Opacity slider. Other times, such as with this picture, the original was so dark you need to lighten it further. In that case, just duplicate the second layer and you ll get a third layer, already in Screen mode. The picture will become even brighter. Figure 10-6 is the result of two additional screen layers. Of course, if your second or third layer goes too far, you can adjust Opacity on just that layer to get exactly the right level.
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