Si 3

You can usually tell roughly how to adjust the Tonal Width sliders by looking carefully at your image. If you need to brighten the darkest shadow areas, but the lighter areas are okay, restrict the Shadow Tonal Width's coverage to a narrow range. If all the shadow areas need adjustment, use a higher number (looking carefully for those haloes). Conversely, you can independently apply adjustments to the brightest highlights, darker highlights, or all highlights, as you prefer.

The Shadow/Highlight control examines each pixel in your image and classifies it as a shadow pixel or highlight pixel (or, as a midtone if it's right smack in the middle). Ordinarily, the feature does a good job of classifying pixels, as it checks adjacent pixels and uses their relationship with the pixel being processed to make its assessment. However, you can enlarge or contract the size of the pixel's "neighborhood" using the Radius slider. The ideal radius varies from image to image and the only way to determine the optimum setting is to monitor your image. A radius that is too large will brighten shadows too much, or excessively darken highlights.

You'll need to play with this control to get exactly the right effect. Color Correction

Adjusting the highlights and shadows areas of images almost invariably causes color shifts in the area modified. Tones that are too dark or too light tend to mask the true color of a pixel, because the hue is no longer visible once a portion of an image becomes excessively dark or washed out. Restoring a pleasing tone often makes these colors visible again.

Figure 6.28 shows a tightly cropped version of another shot of the country church's tower. This one exhibits a lot of lens flare, which shows up as blotchy areas. (These can be fixed with retouching, discussed in Chapter 4.) However, this less-than-perfect image is just about perfect for showing how and why color correction is needed when you adjust shadow and highlight areas.


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