TAILIEUCHUNG - Photoshop cs5 by steve Johnson part 28

Hiểu biết về màu sắc và kênh Trong thế giới của thiết kế, màu sắc là một trong những yếu tố quan trọng nhất. Khi bạn đang tạo ra một tờ rơi, quảng cáo, hay biểu ngữ bằng cách sử dụng Adobe Photoshop, hay sử dụng màu sắc thu hút sự chú ý của người xem. Nó cũng giúp thu hút các thành phần của thiết kế của bạn vào một trong những đơn vị gắn kết. | Understanding Colors and Channels 8 Introduction In the world of design color is one of the most important elements. When you re creating a brochure advertisement or banner using Adobe Photoshop good use of color attracts the attention of the viewer. It also helps draw the elements of your design into one cohesive unit. Color is a strong motivator and is used in all aspects of our daily life. Since color is so important to design Photoshop lets you use industry-standard color sets or you can create and save your own customized color panels. You can also color-correct a photograph by removing the color entirely or selectively remove colors from portions of the image. In addition Photoshop gives you ways to select areas based on color and then fill those areas with any color you choose. Not only is it important to understand how color is used it s also important to understand how Photoshop manages color information and that s where the Channels panel comes into the picture. Channels are where color information is stored. The number of channels in an image is based on its color mode or color model such as RGB Red Green and Blue or CMYK Cyan Magenta Yellow and Black . A firm understanding of channels and color modes and their function in Photoshop will go a long way in helping you control and manage color. When adjusting your image you can use various commands Auto Contrast and Color Curves Color Balance Brightness Contrast and Desaturate just to name a few. You can also use the Match Color and Selective Color adjustments to further fine-tune your image. Photoshop also provides a Photo Filter adjustment as well as a Shadows and Highlights adjustment to correct those overexposed or underexposed images. With all of the commands and adjustments available the real dilemma will be where do you begin What You ll Do Work with 8- 16- and 32-Bit Images Work with the Channels Panel Work with Color Modes Understand the Various Color Modes Use the Replace Color Adjustment Work .

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