by Julieanne Kost

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Created

December 17, 2009

When the Curves Adjustments panel is active, Option (Mac)/ Alt (Win) + drag black/white point sliders to show clipping. Note: don’t drag the points in the curve, drag the black and white triangles below the curve. If you have selected the black or white point eyedropper and mouse over the image area, holding the Option (Mac) / Alt (Win) key will also preview any clipped values.