means that there are no white pixels in the image. (An image that is too light would
have a histogram with pixels on the right side of the graph.)208 ABSOLUTE BEGINNER’S GUIDE TODIGITAL PHOTOGRAPHY
FIGURE 14.3
The histogram
shows that this
image is too
dark.You can correct an overly dark image by dragging the white slider (the one on the
right side of the histogram) to the left, which makes pixels that had been light tones
of gray in the original image become pure white (see Figure 14.4).FIGURE 14.4
Change the lev-
els to lighten
the image.