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Exposure

As with white balance adjustments, exposure adjustments performed as part of the raw conversion are lossless (unless you clip highlights to white or shadows to black), unlike tonal adjustments made in Photoshop on the rendered image (see Figure 1-3). In practice, however, you have somewhat less freedom to adjust exposure than you do white balance.

The main limitation on exposure adjustments is that when you try to open up significantly underexposed images, you'll probably see noise or posterization in the shadows. It's not that the edit is destructive—you just didn't capture enough shadow information in the first place.


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