2 In the color picker, choose the first color, and then click OK. The color picker remains open; choose the second color, and then click OK. Canvas fills the selected color swatches in the Color Table dialog box with a ramp of the two colors. RGB Color image mode RGB Color mode is used most often when working with high-quality full-color images, such as those from color scanners and digitized photographs stored on CD-ROM. RGB Color mode is the most reliable mode to use for images you want to modify with painting tools and filters. However, the full range of RGB colors exceeds the range that commercial printing can reproduce, so you should be aware of the limitations of the printing method that will be used. Also, an RGB Color image is device depen- dent, which means that the same RGB values can look different when displayed on different monitors. In RGB Color mode, each pixel has a red, green, and blue compo- nent. Each component, referred to as a color channel, has 256 inten- sity levels. The combination of the intensity value in each channel creates each pixel’s color. CMYK Color image mode CMYK Color mode is based on the four color inks used in commer- cial printing (and by some desktop printers): cyan, magenta, yellow, and black. Some color scanners can produce CMYK images. In a CMYK Color image, each pixel has a cyan, magenta, yellow, and black component. Each of these color channels has 256 intensity levels. The combination of the intensity value in each channel creates Color picker (Windows) Luminosity control Click to select the current color Color selector Tip Remember that RGB is used for images on the Web and CMYK is used for print.
Canvas 8 Help: Painting and image-editing (42 of 46)                                                Page #628