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Tham khảo tài liệu 'photoshop cs5_tập 7', công nghệ thông tin, đồ họa - thiết kế - flash phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Defining the highlight and shadow 7 With the highlight eyedropper X selected hover over the image and hold down the Alt Option key causing the image to again display in the posterized view. Here is where it might get tricky add the Shift key to this configuration your cursor changes into the Color Sampler too t . Click on the light area you can find in the logo art. A color sample appears on the image but no change has yet been made to the image. Add a color sample to mark the lightest point in the image. If necessary you can reposition the Color Sample by holding down the Shift key and dragging it to a new location. 8 Make sure that the Set White Point eyedropper is still selected and click on the color sampler you just created on the logo art. This has now defined this area of the image as the lightest point of the tone curve and is adjusted to your newly defined highlight color values. If this gives you unexpected results you might have missed the color sampler. You can undo by pressing Ctrl Z Windows or Command Z Mac OS and then try clicking on the white area of the logo art again. Keep in mind that the color sample that you dropped is only a marker you do not have to move the sampler to change the highlight. Now you will set the black or darkest part of your image. 9 Before you begin press Ctrl 0 zero Windows or Command 0 zero Mac OS to make the image fit in the window. Lesson 7 Creating a Good Image 191 Defining the highlight and shadow 10 Select the shadow slider a on the Curves Adjustments panel and hold down the Alt Option key and drag the slider towards the left. When dragging the slider slowly notice that clipping appears indicating with darker colors the shadow areas of this image. Notice that there are many shadow areas in this image but we want to focus on the subject matter the small boy . Slide to the left until you see the shadow areas increase in the folds of the boy s clothing and then release. To see the darkest parts of this image hold down the
