DISPLAY PRESET
Use Display Preset to select the gamma of the displayed image:
The Display Preset allows you to select the gamma for the camera recording.
The selections are:
SDR -
Standard Dynamic Range (SDR)
(default)
HDR -
High Dynamic Range
HLG -
Hybrid Log-Gamma (HLG)
STANDARD DYNAMIC RANGE (SDR)
Standard-dynamic-range (SDR) video describes images or video using a conventional gamma curve signal. The
conventional gamma curve is based on the limits of the cathode ray tube which allowed for a maximum luminance of
100 candelas per square meter (cd/m
2
).
HIGH DYNAMIC RANGE
High Dynamic Range (HDR) images are recorded using technology that captures and outputs a greater range of
luminance than images recorded using Standard Dynamic Range (SDR) methods.
HYBRID LOG-GAMMA (HLG)
Hybrid Log-Gamma (HLG) delivers HDR resolution without the need for metadata. This allows HLG to display well on
SDR and HDR monitors.
BACKGROUND
NHK and the BBC developed HLG in a joint effort to create a more compatible signal for a wide variety of television
sets.
Hybrid Log-Gamma is an open-source standard HDR (High Dynamic Range) video format. Video dynamic range is the
measurement between the brightness between black and white (luminosity).
Many monitors offer HDR. However, unlike resolution parameters (1080p, 4K, etc.), HDR is related to luminosity.
Luminosity can vary between how an image is captured on a camera and how the image is broadcast to a monitor.
HDR, using Perceptual Quantizer (PQ), sends a signal along with metadata. This metadata is read by the monitor
which then displays the signal using the luminosity information supplied by the metadata.
HLG sends a combination (hybrid) of the normal Gamma curve for light coding and a logarithmic curve to deliver the
HDR aspects of the signal.
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