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![]() Standard Color Working Spaces
A standard working space is a place to store color data until you know what you want to do with it. For example, you might want to display, print, or proof a file.
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Standard working spaces are defined by ICC profiles. Standard spaces common in the graphic arts (in order of increasing size) are sRGB, ColorMatch RGB, and Adobe RGB. Each standard RGB working space profile has a gamma (contrast), color temperature (white point), and color gamut size.
When Photoshop 5 was introduced, a big hullabaloo ensued because the default standard RGB working space was sRGB (standard RGB). sRGB was introduced by HP and Microsoft to represent the "least common denominator" of home PCs. Many users felt that sRGB had too small a color gamut to represent CMYK printing on offset presses, much less more colorful large-format printers. At that time, many users favored the ColorMatch RGB profile that was introduced by Radius for its ColorMatch line of professional graphics monitors. ColorMatch RGB has a larger gamut than sRGB. Now most users prefer Adobe RGB, which has a very large gamut and can encompass the color gamut of most large-format printers. For most work, however, you won't see a difference if you print an image from sRGB, ColorMatch RGB, or Adobe RGB.
Workflow with Standard Working Spaces
Working with devices. Many input devices, including scanners and digital cameras, can capture images to standard RGB working spaces. Likewise, many output devices, including inkjet and electrostatic printers, are set up to receive RGB images in standard working spaces.
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If you have captured images using a custom scanner or camera profile, you may be able to convert them to a standard working space using your capture application or with a desktop application like Photoshop. Likewise, if you have a custom printer profile, you can convert to that profile in Photoshop or similar application before printing, or upon printing, images.
Embedding profiles. Standard working space profiles can be embedded into saved images, so that when the images are transferred from one computer to another, or from a content creator to a service provider, the color stays the same. Embedding the profile increases the file size slightly. If you have settled on a standard working space and capture, edit, and output color entirely in-house, you can save some disk space by not embedding the profiles. However, if anyone else might open your images with an application that can read profiles, embedding the profile ensures that they'll get the same color as the creator, so it's generally recommended.
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