Adjust the tonal values and color balance of an image by setting the black point and white point. Adjusting the levels affects the pixel distribution within an image.
Before and after adjustment applied.
Settings
The following settings can be adjusted:
Color space—select a color mode (Grey/RGB/CMYK/LAB) from the first pop-up menu.
Channels—specify a single color channel to apply the adjustment to, including the layer's alpha channel. Master (the default choice) applies the adjustment to all color channels*, excluding alpha channel*. Select from the second pop-up menu.
Black—determines the range of pixels in the image considered to be pure black. Drag to the right to include pixels in the range (thereby increasing shadows), drag to the left to exclude pixels (thereby reducing shadows).
White—determines the range of pixels in the image considered to be pure white. Drag to the left to include pixels in the range (thereby increasing highlights), drag to the right to exclude pixels (thereby reducing highlights).
Gamma—determines the distribution of mid-tone pixels in the image. Drag to the left to redistribute pixels towards the black point, drag to the right to redistribute towards the white point.
Output Black—determines the range of pixels in the output considered to be pure black. Drag to the right to include pixels in the range (thereby increasing shadows), drag to the left to exclude pixels (thereby reducing shadows).
Output White—determines the range of pixels in the output considered to be pure white. Drag to the left to include pixels in the range (thereby increasing highlights), drag to the right to exclude pixels (thereby reducing highlights).
