Histogram Display - Blackmagicdesign ATEM Production Studio 4K Installation And Operation Manual

Vectorscope Display lets you push colors in your video to the limits, without accidentally adding
unwanted color tints to blacks and whites. While color balance can be monitored on both the
RGB Parade Display and Vectorscope Display, color balance issues will often be easier to see
in Vectorscope Display.
When color correcting footage of skin tone, particularly faces, you will want to keep your warm
color saturation along a line at approximately 10 o'clock on the vectorscope. This is known as
the "fleshtone line" and is based on the color of blood beneath the skin's surface. The fleshtone
line is therefore applicable to all skin pigmentations and is the best way to ensure the skin tones
of your talent look natural.

Histogram Display

Histogram Display is most familiar to graphic designers and camera operators. Histogram
Display shows the distribution of white to black information and lets you monitor how close the
detail is to being clipped off in the whites or blacks of the video. Histogram Display also lets you
see the effects of gamma changes in the video.
Black video is shown on the left of the display, and whites are shown on the right. All video
should usually be found between the 0% and 100% intervals of the Histogram Display.
Your video is being clipped if it moves below 0% or above 100%. Video clipping can be really
bad, when you're on a shoot, as detail in the blacks and whites must be preserved if you
subsequently want to perform color-correction in a controlled environment. When shooting,
keep the video above the black clip, and below the white clip, so you can have more freedom
later to adjust colors without whites and blacks appearing flat and lacking in detail.
When shooting video, you might decide to clip your video, and in which case Histogram Display
will show the effect of clipping the video, and how much it is being clipped. You can even use
gamma to create a similar look, with less clipping, while retaining more detail.
You cannot really use Histogram Display to check for illegal levels although you can use it to
see illegal blacks and whites. Histogram Display does not show colors and so the histogram
might appear to show legal levels, even though your video may contain illegal colors. Again,
RGB Parade Display provides the best way to watch out for illegal levels as it shows them in
both the color and luminance elements of the video signal.
The HIGH and LOW buttons simply control how bright the histogram appears on your computer
display. If you find the white area of the histogram is too bright in a dark studio, choose LOW for
a more comfortable brightness level.
Histogram Display
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