Đang chuẩn bị liên kết để tải về tài liệu:
Photoshop cs5 by steve Johnson part 61

Hình ảnh kiểm soát đầu ra Một khi bạn tạo ra Adobe Photoshop kiệt tác của bạn, bạn sẽ phải quyết định đầu ra cho tập tin ảnh. Điều này không phải là một quyết định dễ dàng. Ví dụ, một hình ảnh được tạo ra với độ phân giải 72 ppi có thể bị phạt nếu xuất ra web, nhưng sẽ không có chất lượng đủ để xuất ra một máy in laser chất lượng cao. Ngoài ra, hình ảnh được lưu trong không gian màu RGB sẽ không làm việc nếu hình ảnh đã được in trên báo chí. | Controlling Image Output 16 Introduction Once you create your Adobe Photoshop masterpiece you will have to decide the output for the image file. This is not an easy decision. For example an image created with a resolution of 72 ppi might be fine if output to the Web but would not be of sufficient quality for output to a high-quality laser printer. In addition images saved in the RGB color space would not work if the image were to be printed on a 4-color press which uses the CMYK color space. Raster images such as Photoshop files do not handle change very well so it s important to design with a goal in mind. Designers call this process a workflow. When you start a Photoshop project you should have a good idea of where the project is headed to a press or inkjet printer a copy machine or a monitor. Knowing this information helps you design with the end in mind. That s not to say you can t make changes to a Photoshop document however when it comes to color space and resolution the less change the better the output quality. When preparing images for the Web it s important to understand that file size and format are important considerations. People aren t very patient when it comes to downloading web pages. Creating good-looking yet fast-loading images keeps visitors on your web site looking for more. Photoshop gives you the ability to perform image compression using formats such as the JPEG Joint Photographic Experts Group and GIF Graphics Interchange Format formats. Those formats will make your images as small as possible while still retaining great quality. In image preparation it s all about control and Photoshop gives you the tools to make the job easy. What You ll Do Set Document Print Options Set Print Output Options Print a Document Change Printer Settings Print One Copy Understand File Formats Save a Document with a Different File Format Insert File Information into a Document Understand File Compression Prepare Clip Art for the Web Prepare a Photograph for the