CHAPTER 4: ADDING EFFECTS AND TITLES 123Color wheel gives you direct interactive control over the hue and saturationparameters. Either drag the black horizontal ruler on the wheel or use the slider toadjust the saturation first then click-drag on the outer circle of the wheel to selectthe color. Click-dragging on the wheel is equal to adjusting the Hue Shift control.• Hue shift changes the color in a linear fashion sliding through the spectrum.• Gamma determines the total number of colors.• Gain multiplies your pixels with a higher (brighter) value, boosting the colors.• Saturation sets the intensity of color.• Contrast sets the amount of contrast in image.• Luminance alters the overall brightness.Color correcting with CurvesEditing curves is the most straight-forward color correction approach. It allows youto directly remap the tonal values in the video or any channel of the video. Themost important thing to remember while working with curves is the X and Y axisrelation. The horizontal axis represents current values of the pixels in the videofrom 1 to 256. The vertical axis represents tonal values in the video.Thus, choosing the right slope of your curve is crucial for the quality of your colorcorrection. It might seem a little confusing first, but as you experiment you willlove curves for their efficiency.To adjust curves:1. In the Color Correction Tool dialog box, click Curves to access the controls.2. Click on one of the color channels button to select a particular channel for colorcorrection, or click the Master button to color correct all three RGB channels.3. Draw a curve in the curve window.
