© 2011 Delmar, Cengage Learning Chapter 11 Adjusting Colors

Chapter Lessons Correct and adjust color Enhance colors by altering saturation Modify color channels using levels Create color samplers with the Info panel © 2011 Delmar Cengage Learning

Use color-enhancing tools to change the mood or personality of a color by changing its tonal values Tonal values (also called color levels): –Numeric values of an individual color –Used to duplicate a color © 2011 Delmar Cengage Learning Enhancing Color

Use color adjustment tools to specify exactly how colors should appear when printed Colors levels are modified by making adjustments to the input and output levels © 2011 Delmar Cengage Learning Reproducing Colors

Balancing color: –Add and subtract colors from those already existing in a layer –Correct oversaturated or undersaturated color –Remove color casts from an image © 2011 Delmar Cengage Learning Correct and Adjust Color

Contains three sliders: –Cyan-Red –Magenta-Green –Yellow-Blue Adjust colors by dragging sliders or typing values in the Color Levels text boxes © 2011 Delmar Cengage Learning Color Balance Dialog Box

Alter the output tonal value of any pixel input Change as many as 16 points along the scale in the Curves Adjustments panel –Horizontal axis: original intensity values (Input levels) –Vertical axis: modified color values (Output levels) © 2011 Delmar Cengage Learning Modifying Curves

© 2011 Delmar Cengage Learning Active Setting Values for Active Setting Curves Settings

Create an adjustment layer Experiment with color corrections: –Adjust the color sliders and view changes to the image –Modify the curves © 2011 Delmar Cengage Learning Analyzing Colors

In the Variations dialog box, view thumbnails of color variations while making color adjustments © 2011 Delmar Cengage Learning Variations Dialog Box

Purity of a particular color The higher the saturation level, the more intense the color Modify color saturation using: –The Hue/Saturation dialog box –Sponge tool © 2011 Delmar Cengage Learning Enhance Colors by Altering Saturation

Use to increase or decrease the color saturation of a specific area within a layer Sponge tool settings include: –Brush size –Saturation or de-saturation levels –Speed with which the color flows into or from the Sponge tool © 2011 Delmar Cengage Learning Using the Sponge Tool

© 2011 Delmar Cengage Learning Reds Saturated Before After Saturation Example

Hue is the amount of color that is reflected from an object –Assigned a measurement from 0 to 360 degrees –Described in terms of tints or shades (red, yellow-green, blue, gold, etc.) © 2011 Delmar Cengage Learning Understanding Hue

In the Hue/Saturation dialog box use the following sliders: –Hue –Saturation –Lightness © 2011 Delmar Cengage Learning Adjusting Hue/Saturation

Use the Hue/Saturation settings to apply grayscale tones to an object in an image © 2011 Delmar Cengage Learning Object in Grayscale Converting to Grayscale

Use the Levels settings to make adjustments across a tonal range: –Uses the composite color channel or individual channel The Levels feature uses a histogram and displays light and dark color values on a linear scale © 2011 Delmar Cengage Learning Modify Color Channels Using Levels

A graph that represents the frequency distribution of colors in an image Adjustments are made to the input and output levels Plotted data indicates the total number of pixels for a given tonal value © 2011 Delmar Cengage Learning Histograms

© 2011 Delmar Cengage Learning Histogram showing plotted data Levels Dialog Box

© 2011 Delmar Cengage Learning Levels settings contains six sliders that are used to make color adjustments: Shadows slider Midtones slider Highlights slider Output shadows slider Output highlights slider Using Sliders

Use the Color Sampler tool to sample and store up to four distinct color samples –Apply each of the four color samples to an image –Use the samples to make color adjustments © 2011 Delmar Cengage Learning Create Color Samples with the Info Panel

© 2011 Delmar Cengage Learning Each sample represented by a number Sample 1 Sample 2 Color Samples

Displays the following information: –Actual color values for current color mode –CMYK values –X & Y coordinates of the pointer location –Width and height of a selection Info panel expands to show color measurement information when a color sample is created © 2011 Delmar Cengage Learning Info Panel

© 2011 Delmar Cengage Learning RGB Color Values Pointer Coordinates CMYK Color Values Width & Height Color Samplers Info Panel

Move a color sampler by dragging the sampler icon to a new location: –Color value information is updated in the Info panel Delete any of the samplers © 2011 Delmar Cengage Learning Manipulating Color Samplers