Nikon D300 User Manual page 661

have to do with the amount of color information. I repeated
this for emphasis!
The left (dark) and right (light) directions are very important
for your picture taking. If the image is too dark, the histogram
will show that by clipping off the light values on the left; or if
it's too light, by clipping on the right. This will become easier
to understand as we look at well-exposed and poorly exposed
images. Check out the Histogram Basic Tutorial in
Figure 9-15, and then we'll look at things in more detail.
When you see the three histograms next to each other, does it
make more sense? See how the underexposed histogram is all
the way to the left of the histogram window and is clipped
mid-peak? Then note how both edges of the well-exposed
histogram just touch the edges of the histogram window.
Finally, notice how the overexposed image's histogram is
crammed and clipped on the right. I hope this helps
somewhat! Now let's look at some histogram detail.
Figure 9-15. Three histograms – one underexposed, one
correctly exposed, and one overexposed
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