Photoshop Adjustment Layers

This adjustment layer converts a color image to grayscale while controlling how individual colors are converted. and applies color tones such as a sepia effect.

• Equalize

• Channel Mixer

• Shadows/Highlights

• Black and White

Makes simple adjustments to a tonal (black, white, neutral) range, but can often wash out the color.

• Gradient Map

• Brightness/Contrast

• Match color

• Channel Mixer

Modifies a color channel, using a mix of current color channels

• Variations

• Selective color

• Match color

• Channel Mixer

Changes the overall mixture of color

• Color Balance

• Threshold

• Invert

• Posterize

Makes adjustments to an entire tonal range, using 3 variables: highlights, shadows, and midtones.

• Exposure

• Variations

• Posterize

• Curves

Maps the equivalent grayscale range of an image to colors of a specific gradient fill

• Exposure

• Gradient Map

• Levels

• Channel Mixer

Changes position on the color wheel or heaviness of a color.

• Invert

• Posterize

• Hue/Saturation

• Levels

Sets highlights and shadows by increasing the tonal range of pixels while preserving color balance

• Selective color

• Shadows/Highlights

• Black and White

• Levels

Similar to the practice of adding a color filter to a camera lens to adjust the color balance and color temperature

• Match color

• Replace color

• Exposure

• Photo Filter

Specifies the number of tonal levels for each channel

• Exposure

• Posterize

• Invert

• Curves