Luma Histogram

The Luma Histogram displays the range of luminance levels in the video signal, with black on the left and white on the right. The height of each line corresponds to the percentage of the image that occurs at that luminance level.

Controls

Scaling

The Luma Histogram can be toggled between "log" and "linear" scaling. In log mode, each horizontal graticule represents an order of magnitude - 10, 100, 1000 and so on. This means that even luminance levels with relatively low frequency within your signal will be easily visible within the palette.

Linear scaling causes the vertical axis to be scaled to the height of the most populated luminance level.

HDR Overlays

HDR overlays show a lower fidelity histogram of common ST2084-specific luma ranges, along with a total coverage percentage.