Working the ControlsWhen we're trying to determine the right sharpening settings for an image, we start by setting the Radius. We usually start out with exaggerated Amount and Threshold settings (400 percent and 0), then we experiment with the Radius value. The exaggerated Amount and Threshold make it easy to see what's happening as we adjust the Radius (see Figure 9-6). Figure 9-6. Radius versus Amount versus Threshold |