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The Vectorscope can have Colorize enabled to show false color which lets you see which colors in the
Viewer image are where in the video scope graph.
More saturated colors in the frame stretch those parts of the graph farther toward the edge, while less
saturated colors remain closer to the center of the vectorscope, which represents 0 saturation. By
judging how many parts of the vectorscope graph stick out at different angles, you can see how many
hues there are in the image, with the specific angle of each part of the graph showing you which hues
they are. Furthermore, by judging how well centered the middle of the vectorscope graph is relative to
the crosshairs, you can get an idea of whether there’s a color imbalance in the image. If the
vectorscope graph is off-centered, the direction in which it leans lets you know that there’s a color cast
(tint) in the image.
The Vectorscope shown in 2x mode, with combined
highlights, mid-tones, and shadows extents
Histogram (RGB/YRGB parade histogram)
Displays a statistical analysis of how many pixels of each color channel lie at each percentage of
tonality, plotted along a digital scale from 0 percent (black) to 100 percent (white). Comparing the left,
middle, and right parts of the Y, R, G, and B graphs (Y is optional) lets you evaluate the color balance in
the shadows, midtones, and highlights of the image.
Taken altogether, the left of all graphs indicates the black point of the image, while the right of all
graphs indicate the white point. It then follows that the difference between the width of the left and
right of all graphs indicates the overall contrast ratio of the image you’re evaluating. Wide histogram
graphs indicate a wide contrast ratio, while narrow histogram graphs indicate a narrow contrast ratio.
The Histogram scope set to YRGB
Chapter 124Viewers, Monitoring, and Video Scopes 2524
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