back color value. Black in the background appears unchanged; the front color appears in place of white in the background. Lighten In Lighten mode, the color values of the front color replace the underlying color values if the front color value is lighter than the back color value. White in the background appears unchanged; the front color appears in place of black in the background. Difference The Difference mode compares the color values of the front and back colors and subtracts the darker value from the lighter value. If the front and back colors are identical, the result is black. If the front or back color is black, the other color does not change. If the front or back color is white, the other color is inverted. Dodge Dodge mode compares the lightness values in each channel of the front and back colors, and uses the lighter value from each channel for the result color. However, black is not replaced by a lighter color. White in the front replaces all colors except black. Burn Burn mode compares the lightness values in each channel of the front and back colors, and uses the darker value from each chan- nel for the result color. However, white is not replaced by a darker color. Black in front replaces all colors except white. Color modes Canvas calculates transfer mode effects by applying formulas to color values. Canvas performs these calculations in RGB or CMYK color space. In other words, Canvas uses RGB color values or CMYK color values in its calculations. For example, the formula for Multiply mode is Color 1 multiplied by Color 2. Canvas applies the formula separately to each value that defines a color. In the case of RGB colors, Canvas applies the for- mula separately to the red, green, and blue values. For CMYK colors, Canvas calculates the effect on cyan, magenta, yellow, and black val- ues. The significance of the color space calculation is that the effect you see on screen could appear completely different if the effect is printed in a different color space. In particular, you must display transfer mode effects in CMYK if the document will be separated for printing with process (CMYK) col- ors. Otherwise, the color separations could produce colors that are completely different from the colors you see on screen.
Canvas 8 Help: SpriteLayer effects (22 of 24)                                                       Page #376