User Manual

Table Of Contents
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
CIE Chromaticity Scope
DaVinci Resolve contains CIE 1931 xy and CIE 1976 uv scopes, which let you see the current
image analysis as a graph superimposed against a triangle that represents the tristimulus
values of the color gamut you’re working within, along with an indication of the current white
point. A label shows the currently selected gamut, with the specific coordinates of these Red,
Green, and Blue values as well as the White point, while the overall “horseshoe” shape
represents the entire range of visible light, all plotted against an xy graph.
You also have the option of showing a second gamut triangle, in cases where you want to
compare the current analysis to two different gamuts. This can be useful when you need to
create deliverables in multiple gamuts, and you want to see which parts of the video signal are
safe in all gamuts and which parts are exceeding the smaller of the two. When you do this, both
gamuts are labeled, and the coordinates of the Red, Green, and Blue values of both gamuts are
listed to the side.
The CIE 1931 xy scope showing both P3 and Rec.709 gamuts
Chapter – 114 Viewers, Monitoring, and Video Scopes 2603