Absolute Beginner's Guide to Digital Photography

The Purpose of Levels Triangles

The sliders under the Levels histogram represent absolute black, 50% black (middle

gray), and absolute white (see Figure 15.7). These colors correspond with values of 0

for black, 128 for middle gray, and 255 for white.

224 ABSOLUTE BEGINNER’S GUIDE TODIGITAL PHOTOGRAPHY

FIGURE 15.7

Levels his-

togram.

Black, gray, white slider triangles

Black, gray, white eyedropper

Histogram of Image

Here is a breakdown of the sliders. Examine Figures 15.8 and 15.9 for a visual aid in

understanding how these sliders work:

FIGURE 15.8

Some images

seem to have a

gray haze over

them. This often

occurs when a

picture is taken

underexposed

at high noon.