Appendix C. Adjustment Layers Reference
Each adjustment layer is presented in detail, along with examples of its effect and a selection of presets. You’ll also find a handy table of bit-depth and color space compatibility.
Brightness/Contrast
The Brightness/Contrast adjustment lets you make simple adjustments to the tonal range of an image. Moving the Brightness slider to the right increases tonal values and expands image highlights, to the left decreases values and expands shadows. The Contrast slider expands or shrinks the overall range of tonal values in the image.
In normal mode, Brightness/Contrast applies proportionate (nonlinear) adjustments ...
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