Adobe Photoshop CS3 Manual de usuario descargar pdf (Pagina 114)

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Chapter 5: Color

Color can be described in several ways using a color model such as RGB or CMYK. As you work in your image, you

specify colors using one of the color models. In Photoshop you choose the approach to color that’s appropriate for

your image and how it’s being used.

About color

Understanding color

Knowing how colors are created and how they relate to each other lets you work more effectively in Photoshop.

Insteadofachievinganeffectbyaccident,you’llproduceconsistentresultsthankstoanunderstandingofbasiccolor

theory.

Primary colors

Additive primaries are the three colors of light (red, green, and blue) that produce all the colors in the visible

spectrum when added together in different combinations. Adding equal parts of red, blue, and green light produces

white. The complete absence of red, blue, and green light results in black. Computer monitors are devices that use

the additive primaries to create color.

Additive colors (RGB)

R. Red G. Green B. Blue

Subtractive primaries are pigments, which create a spectrum of colors in different combinations. Unlike monitors,

printers use subtractive primaries (cyan, magenta, yellow, and black pigments) to produce colors through subtractive

mixing. The term “subtractive” is used because the primary colors are pure until you begin mixing them together,

resulting in colors that are less pure versions of the primaries. For example, orange is created through the subtractive

mixing of magenta and yellow together.

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