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Imagery and Graphics > 265: Thou shall use a mixed RGB and CMYK image workflow

265: Thou shall use a mixed RGB and CMYK image workflow

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Commentary There’s a vicious rumor kicking around that all images must be converted to CMYK before they’re sent for reproduction and print. This isn’t actually true—it’s fine to implement a mixed RGB and CMYK workflow as long as you use color profiles. Color profiles (for example, Adobe RGB 1998 or FOGRA39) contain data that describes how any one device, which could be a screen or a printer, will deal with the color information contained in an image. They use LAB, a device-independent color model (see Rule #163) to closely preserve colors that move from one color space to another. As most of us now send our artwork to printers as PDFs we can set Color Conversion to Convert to Destination (Preserve Numbers) when we export a PDF, helping to ensure that any RGB images in a layout convert automatically to CMYK while maintaining color consistency with the RGB original. This cuts out the need to convert all your images beforehand, and makes it possible to keep RGB originals which are better suited to color correcting and manipulation in Photoshop. TS


  

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