ptg 22 Chapter 1 You can modify the size and resolution of a document after opening. However, be aware that changing the size and/or the resolution of an image forces Photoshop to add or subtract pixels from the image in a process called interpolation. For example, when you change the reso- lution of an image from 72 ppi (pixels per inch) to 144 ppi, Photoshop must add more pixels. Conversely, if you reduce the resolution, Photoshop must remove pixels. The image interpolation method deter- mines how Photoshop completes this process. You can use the Nearest Neighbor method for the fastest way, but it produces the poorest visual image. Or, you can use the Bicubic Sharper method, which takes the longest to perform, but produces the best visual results. Changing Image Size and Resolution Change Image Size Open an image. Click the Image menu, and then click Image Size. Select the Resample Image check box. Click the Resample Image list arrow, and then select an option: ◆ Nearest Neighbor. Best for quick results with low quality. ◆ Bilinear. Best for line art. ◆ Bicubic. Default, best for most purposes with high quality. ◆ Bicubic Smoother. Best for enlarging an image. ◆ Bicubic Sharper. Best for reducing an image. To ma int ain i mage propo rti ons , select the Constrain Proportions check box. Enter the desired sizes in the image size boxes. If you choose to constrain proportions in step 5, when you change a size, the other boxes will adjust automatically. Click OK. 7 6 5 4 3 2 1 7 5 4 3 6 Icon indicates constrained proportions Using a Large Canvas Size Photoshop supports documents up to 300,000 pixels in either dimen- sion, with up to 56 channels per file. Photoshop offers three file for- mats for saving documents greater than 2 GB: PSB, Photoshop RAW, and TIFF. It's important to note that most programs, including older versions of Photoshop (before the CS version), support a maxi- mum file size of 2 GB. For Your Information From the Library of Wow! eBook ptg Chapter 1 Getting Started with Photoshop CS5 23 Change Image Resolution Open an image. Click the Image menu, and then click Image Size. Clear the Resample Image check box. Enter a resolution, which automatically adjusts the Width and Height fields. Click OK. 5 4 3 2 1 5 4 3 From the Library of Wow! eBook ptg 24 Chapter 1 As time passes, Photoshop—like any other program—will change. There are two types of changes to a program: updates and patches. Updates are improvements to a program such as a new feature, option, or command. Patches are software fixes for problems discovered after the public release of the program. The good news is that both updates and patches are free, and once downloaded, are self-installing. Adobe gives you two ways to check for changes. You can check manually by going to the Adobe web site, or automatically through the Adobe Updater. The Adobe Updater Preferences dialog box allows you to set update options for Photoshop and other installed Adobe products, such as Bridge. You can also set an option to have Adobe notify you of updates in the menu bar (New!). Checking for Updates and Patches Check for Updates Directly from the Internet Open your Internet browser. Go to the following Web address: www.adobe.com/downloads/ updates/ Click the Product list arrow, and then click the Photoshop - Macintosh or Photoshop - Windows. Click Go. Any updates or patches appear in a list. Based on your operating system, follow the onscreen instructions to download and install the software. IMPORTANT Checking on your own requires a computer with a connection to the Internet. Since some of the updates can be rather large, it’s recommended you have high-speed access. 5 4 3 2 1 2 3 4 From the Library of Wow! eBook ptg Chapter 1 Getting Started with Photoshop CS5 25 Check for Updates from the Photoshop Help Menu Click the Help menu, and then click Updates. Adobe checks your software with the latest available version and automatically updates it. To ma nua lly c heck, cli ck th e Check For New Updates button. To ch ang e pre ferences , cli ck Preferences, select the update options you want, and then click Done. Click Quit. 4 3 2 1 1 Did You Know? You can deactivate or activate Photoshop to use on another computer. You can use your serial number on only one computer at a time. If you’re mov- ing from one computer to another, you can deactivate your serial number on one computer and then activate it another one. Click the Help menu, click Deactivate, click Suspend Activation (saves serial number) or Deactivate Permanently (removes serial number), and then click Done. To activate it, click the Help menu, click Activate, and then follow the instructions. You can complete or update your Adobe ID profile. An Adobe ID allows you to access Adobe online services. To complete or upda te your Ado be ID profiles, click the Help menu, click Complete/Update Adobe ID Profile, and then follow the online instructions. 2 3 4 From the Library of Wow! eBook ptg 26 Chapter 1 Getting Help While You Work Get Help Information Click the Help menu, and then click Photoshop Help. TIMESAVER Press F1 (Win) or A +/ (Mac). The Adobe Community Help window opens, displaying product help information. Click Help categories (plus sign icons) until you display the topic you want. Click the topic you want. Read the topic, and if you want, click any links to get information on related topics or definitions. When you’re done, click the Close button (Win) or click the Adobe Help menu (Mac), and then click Quit Adobe Help. 5 4 3 2 1 Did You Know? You can get help with Photoshop through the Internet. Click the Help menu, and then click Photoshop Online (requires an Internet connection) to display Photoshop help resources from all over the Web. 1 2 5 4 Click to collapse/ expand panel Click to open help in a PDF At some time, everyone has a question or two about using a program. When you start Photoshop Help, the Adobe Community Help window opens (New!), displaying help categories and topics. You can search product help from Local Help, Community Help, or Adobe.com by using keywords or phrases or browsing through a list of categories and top- ics to locate specific information. Local Help accesses product help on your local computer, Community Help accesses product help online, and Adobe.com accesses related help information on Adobe.com. When you perform a search using keywords or phrases, a list of possi- ble answers is shown from the search location with the most likely responses at the top. Along with help text, some help topics include links to text and video tutorials. In addition, comments and ratings from users are available to help guide you to an answer. You can add feed- back and suggestions by signing in to Adobe.com using an Adobe ID. 3 From the Library of Wow! eBook ptg Chapter 1 Getting Started with Photoshop CS5 27 Search for Help Information Click the Help menu, and then click Photoshop Help. The Adobe Community Help window opens, displaying product help information. To se arc h ano ther CS pro duc t, click the Select Product list arrow, and then select a CS product. Type one or more keywords in the Search box, and then press Enter (Win) or Return (Mac). To re fin e a sea rch, click Search Options to expand it, and then select any of the following options: ◆ Search This Help System Only. Select to constrain the search to the selected product. ◆ Search Location. Select Local Help, Community Help, or Adobe.com. ◆ Filter Results. For Adobe.com, select a filter option. Click the link to the topic you want from the search list of results. ◆ What’s New. Click the plus sign (+) next to Resources, and then click What’s New. Read the topic, and if you want, click any links to get information on related topics or definitions. ◆ Next and Previous Topics. Click the Previous or Next button on the right side of the Help web page. When you’re done, click the Close button (Win) or click the Adobe Help menu (Mac), and then click Quit Adobe Help. 7 6 5 4 3 2 1 Participating in Adobe Product Improvement You can participate in the Adobe Product Improvement Program. Click the Help menu, click Adobe Product Improvement Program, and then follow the onscreen instructions. This is an opt-in program that allows you to test Adobe products and make suggestions for future products. This program enables Adobe to collect product usage data from cus- tomers while maintaining their privacy. For Your Information 5 23 6 Search results 47 From the Library of Wow! eBook . recommended you have high-speed access. 5 4 3 2 1 2 3 4 From the Library of Wow! eBook ptg Chapter 1 Getting Started with Photoshop CS5 25 Check for Updates from the Photoshop Help Menu Click the Help. OK. 7 6 5 4 3 2 1 7 5 4 3 6 Icon indicates constrained proportions Using a Large Canvas Size Photoshop supports documents up to 300,000 pixels in either dimen- sion, with up to 56 channels per file. Photoshop. automatically adjusts the Width and Height fields. Click OK. 5 4 3 2 1 5 4 3 From the Library of Wow! eBook ptg 24 Chapter 1 As time passes, Photoshop like any other program—will change. There are