Apple MB673Z/A User Manual - Page 423
Using the Eyedroppers to Set the Tint of the Shadows, Midtones, andHighlights in an Image
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III There are two methods for selectively adjusting the tint values in an image: you can either use the Black Tint, Gray Tint, and White Tint eyedroppers to have Aperture automatically adjust the tint to neutral color values, or you can use the Black Tint, Gray Tint, and White Tint color wheels to manually adjust the tint values. The method you choose is determined by the level of precision you require. The eyedroppers provide an accurate means of identifying the color cast within the tonal range of each eyedropper and returning the color values to neutral. However, depending on the subject, you may not want to completely remove the color cast found in a specific tonal range. Therefore, you can manually adjust the tint values in the shadows, midtones, and highlights using the Black Tint, Gray Tint, and White Tint color wheels. Using the Eyedroppers to Set the Tint of the Shadows, Midtones, and Highlights in an Image You use the Black Tint, Gray Tint, and White Tint eyedropper tools when you want to have Aperture selectively modify the tints of the shadows, midtones, and highlights in an image automatically. Whereas using the White Balance controls adjusts the tints of all tonal values in the image uniformly, the Black Tint, Gray Tint, and White Tint eyedropper tools allow you to selectively neutralize color casts that affect only the shadows, midtones, or highlights. In some difficult cases, you can use the Black Tint, Gray Tint, and White Tint eyedropper tools in combination with the White Balance controls to first neutralize a tint in a specific tonal range and then uniformly remove the tint from the rest of the image. For more information about adjusting white balance, see "Working with the White Balance Controls" on page 408. Correcting the Tint of the Shadows with the Black Tint Eyedropper You use the Black Tint eyedropper to remove color casts from the shadows in your images. Before Black Tint adjustment After Black Tint adjustment Chapter 15 Making Image Adjustments 423
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