Canon EOS 20D EOS DIGITAL Software Instruction Manual (EOS Viewer Utility 1.2. - Page 41

Editing RAW Images Correcting the White Balance You can correct the standard color temperature of the white balance. By using this function, you can obtain the effectiveness similar to the color temperature converting filter or color compensating filter (third-party product). The range of compensation is 9 levels for each color. This function is especially useful for users who understand the aim and effect of the color temperature converting filter or color compensating filter. O This function is compatible with the EOS-1Ds Mark II and EOS-1D Mark II RAW images only. W Drag the slider left and right to adjust the white balance. Dragging the slider toward B-side adds blue hue, and toward A-side, amber hue. The corrected value specified using the slider. Dragging the slider toward G-side adds green hue, and toward M-side, magenta hue. 3 Correction value when shooting. One level of blue/amber hue is equal to five mireds of the color temperature converting filter. (Mired: the unit of the density of the color temperature converting filter) Working with Images in the EOS Viewer Utility W-35