Video Devices PIX-E5 - Using the Histogram

User Guide
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2. Use the touch screen or Control knob to change settings.
setting Description options
Vectorscope
Magnication
Set the magnication multiplier of the vector-
scope.
• 1.000x - 5.000x
Background Video
Contrast
The contrast level of the background video
when waveform monitor is displayed.
i For a black background, adjust to 0%.
• 0% - 100%
Using the Histogram
The histogram is a tool for checking overall brightness (luma) or color level
(chrominance) within an image. It displays how many pixels there are at each
brightness or color level. The horizontal axis represents luma level with black
being on the left and white on the right. The vertical axis represents the rela-
tive number of pixels at that luma level. Use it to quickly determine that you
are capturing the full dynamic range - most pixels should be distributed broadly
around the center of the horizontal axis, not hard left (under-exposed) or hard
right (over exposed).
The horizontal range of the histogram is -10% to 110%, matching the verti-
cal range of the WFM, where 0% is legal black and 100% is legal white. The
-10% and 110% limits allow for monitoring full range ‘super blacks’ and ‘super
whites’.
The monitor provides 4 histogram modes: Luma (white), Luma (green), RGB
Overlay, and RGB Parade. The following table provides illustrative examples for
each of these modes:
type exaMpLe Description
Luma (white) Displays luma only trace in white.
Luma (green) Displays luma only trace in green, offering a look
reminiscent of green-screen oscilloscopes.
RGB Overlay Displays RGB pixel distribution overlaid, one over
another, as a horizontal trace.
RGB Parade Displays RGB pixel distribution overlaid vertically one
after another: red rst, green second, and then blue.