Tài liệu Altenative Digital Photography P2 docx

14 Alternative Digital Photography Figure 1.21 The image is now open in the Lightroom Develop module. Figure 1.22 The image is now con- verted to grayscale by clicking on Grayscale in a panel on the right. and closed as shown. Adjust Exposure, Recovery, Fill Light, Black, and Punch as nec- essary to have an overall visually pleasing image. Now for the fun part. You have a large number of sliders (eight in Lightroom 1.1) in the HSL/Color/Grayscale panel. Moving those back and forth (or typing in numbers on the right) does the same thing as the Channel Mixer in Lesson 1.5 except that you can control things with much great precision in Lightroom. In Figure 1.23 we moved the yellow slider all the way to the right, and the value changes to -100. Notice the effect on the yellow flowers on the right. They have changed from nearly white to almost black with only small changes in tone in the rest of the image. You can use all of the sliders to tweak your image until it looks just as you would like. 15 Creating Black and White from Color Figure 1.23 The yellow slider is moved to –100, changing the yellow flowers on the right to nearly black. Once you are finished, you can export the image so you can send it to your lab, edit it further in Photoshop, make a slide show, print it, or create a website all from Lightroom. For detailed instructions on any of these features, see Appendix B, “Resource List,” for books to help you with that. If you like the mix that you created, you can save it as a preset by going to the top menu and selecting Develop > New Preset and checking the boxes in the pop-up menu to select the controls and functions that you want your preset to save. Then with future images you can just select the preset. Lesson 1.7—Creating Black and White with Aperture If you have a Macintosh computer, you have your choice of using Lightroom or Aperture as a workflow tool. If you are on a PC, this will not work for you, and you can skip this lesson. Like Lightroom, Aperture offers a free trial version at Apple’s website. In Aperture, in a way similar to the previous lesson, you begin by importing your image. Figure 1.24 shows the proper steps: File > Import > Images. Next open the Inspector by clicking on Window > Show Inspectors (or just hit the i key) as shown in Figure 1.25. Then open the Monochrome Mixer and click on the checkbox. If the Monochrome Mixer is not shown, go up to the top bar called Adjustments and click on the plus (+) sign. In the pop-up menu, select Monochrome Mixer. You can also press Ctrl+M. The image changes to a grayscale (or monochrome or black-and-white) image. See Figure 1.26 for the example. The Monochrome Mixer’s default preset is shown. 16 Alternative Digital Photography Figure 1.24 Importing an image into the Aperture Library so it can be worked on. There are a few other built-in presets to simulate the effect of using color filters with black-and-white film. Figure 1.27 shows how to find the built-in presets. Figures 1.28 through 1.32 show the results of each filter preset. 17 Creating Black and White from Color Figure 1.25 Open the Inspector in Aperture. Figure 1.26 The Monochrome Mixer in Aperture. Checking the checkbox turns it on. Figure 1.27 Open the available presets by clicking on the double arrows next to the Presets section. 18 Alternative Digital Photography Figure 1.28 The image with a red filter preset applied. Figure 1.29 The image with an orange filter preset applied. 19 Creating Black and White from Color Figure 1.30 The image with a yellow filter preset applied. Figure 1.31 The image with a green filter preset applied. Using the Monochrome Mixer in Aperture is very similar to using the Channel Mixer in Photoshop (see Lesson 1.5). The same rules apply. It will usually produce a better result if the numbers total about 100 in the Monochrome Mixer as well as Photoshop’s Channel Mixer. If you create a black-and-white (grayscale/monochrome) style that you like, you can save it in Aperture as a preset. Once you have it set, click on the little gear to the right of the Monochrome Mixer title and choose Save as Preset from the pop-up menu that appears. Comparison of Different Conversion Techniques To make it easier to see some of the different conversion techniques all in one place, we have gathered together many of them on these two pages. 20 Alternative Digital Photography Figure 1.32 The image with a blue filter preset applied. 21 Creating Black and White from Color Figure 1.33 The original color image. Figure 1.34 Photoshop Grayscale. Figure 1.35 Photoshop Desaturate. Figure 1.36 Photoshop Lab Color. Figure 1.37 Photoshop Red Channel. Figure 1.38 Photoshop Green Channel. Figure 1.39 Photoshop Blue Channel. 22 Alternative Digital Photography Figure 1.40 Lightroom Grayscale. Figure 1.41 Aperture Monochrome. Figure 1.45 Aperture Monochrome with green filter. Figure 1.46 Aperture Monochrome with blue filter. Figure 1.43 Aperture Monochrome with orange filter. Figure 1.44 Aperture Monochrome with yellow filter. Figure 1.42 Aperture Monochrome with red filter. Gallery of Black-and-White Images 23 Creating Black and White from Color [...]...24 Alternative Digital Photography Creating Black and White from Color 25 Chapter 2 Creating Sepia from Blackand-White or Color Images A sepia or brown-toned image is often used for artistic effect or to simulate an old-time look for an image These types of images are easy to create You can start with a color image or a black-and-white (grayscale) one We will start with a color digital image of three... These are just a few of the many ways to create a sepia-toned image Besides the other methods, there are plug-ins available for Photoshop that will also easily create sepia images 28 Alternative Digital Photography Figure 2.1 This is the color image we are starting with for the series of lessons in this chapter Lesson 2.1—Creating Sepia with Photoshop, Method 1 This is one of the easiest lessons Simply... values to your liking Save your image as a Photoshop (PSD) or TIFF file (with the layers) This will allow you to go back and change them if you like Figure 2.5 shows the resulting image 30 Alternative Digital Photography Figure 2.5 The resulting sepia-toned image Before you close your file, reduce the size of the image to about 200 by 300 pixels (the exact size doesn’t matter) Save another copy to your... remember the exact settings or play with them each time It will provide a fast workflow and a consistent result Move on to Lesson 2.2 for another technique that produces a similar result 32 Alternative Digital Photography Lesson 2.2—Creating Sepia with Photoshop, Method 2 As with all things Photoshop, there is more than one way to accomplish the same thing This lesson is a variation on Lesson 2.1 In this . 14 Alternative Digital Photography Figure 1.21 The image is now open in the Lightroom Develop module example. The Monochrome Mixer’s default preset is shown. 16 Alternative Digital Photography Figure 1.24 Importing an image into the Aperture Library so