In the color page what does the 0 line on the parade scope represent

• A. Pure White
• B. Gray
• C. Pure Black
• D. Saturation

Answer: (C)

The 0 line is the black level. In the parade scope, each color channel (red, green, blue) is plotted from 0 at the bottom up to the maximum at the top. When the channel values sit at zero, the signal is pure black. So that bottom line is the baseline for darkest detail, not gray, white, or saturation. Lifting values above zero brightens the image, but the zero line itself represents pure black.