tailieunhanh - Professional Information Technology-Programming Book part 35

Tham khảo tài liệu 'professional information technology-programming book part 35', công nghệ thông tin, kỹ thuật lập trình phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | teeth but be careful to keep it realistic. Men specifically should look more weathered especially if they re in outdoor or sports businesses. . Re-lighting for emphasis From a workflow point of view lighting effects are more in a category of special effects than of retouching. There are several ways you can re-light a photo to make it more interesting to make it stand out from the background or to make it a more natural match when combined with other photos. Check out Chapter 9 for lighting methods suited to compositing and Chapter 10 for a number of lighting effects that are traditionally applied with special effects filters. There s one useful re-lighting trick that can be done using the Burn and Dodge layeror a lighting layer that is also a layer filled with 50 gray in Screen mode. Best of all thanks to this gray layer technique you can modify your results endlessly without any damage at all to the Background Layer the original image . The differences between these techniques and those done on the Burn and Dodge layer are that you ll be using a larger brush and often limiting your lighting effect by adding a selection or layer mask. Earlier in the Moistening smoothing and highlighting lips section of this chapter we brightened lips in an image using a certain technique which is really a junior version of something I call the Glow technique see Figure 8-24 . You can use it to give depth and a kind of shininess to almost any type of subject. Since glamour is one of my specialties I ll show you how it s often done with a facethough the same technique could be used in a car or liquor ad. Figure 8-24. A low-key portrait out of Camera Raw left and a glow stroke or two on a Burn and Dodge layer right . Here s all it took to produce that magical glow 1. After you made the low-key interpretation of your RAW file open it in Photoshop. If you must shoot JPEG simply underexpose for about a stop and a half and then work a bit with Levels and Curves adjustment layers .

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