HDR Standards & Formats 3

Question 1

What is the maximum signal level (in nits) that the HLG system is designed to represent at 100% signal value?

Accepted Answer

HLG is scene-referred and has no absolute nit ceiling

Answer

HLG is a scene-referred system whose absolute brightness depends on display capability, not a fixed nit ceiling embedded in the signal.

Question 2

SMPTE ST 2086 defines metadata that describes which aspect of HDR mastering?

Accepted Answer

Mastering display color volume including primaries, white point, and min/max luminance

Answer

SMPTE ST 2086 specifies static metadata describing the mastering display's color primaries, white point, and luminance range.

Question 3

Which HDR format allows content creators to embed 'trim passes' that optimize appearance on displays with different peak luminance levels?

Accepted Answer

Dolby Vision

Answer

Dolby Vision supports creative trim passes—metadata overlays that tailor the image for displays at various brightness tiers (e.g., 600, 1000, 4000 nits).

Question 4

What does the acronym MaxCLL stand for in HDR metadata standards?

Accepted Answer

Maximum Content Light Level

Answer

MaxCLL (Maximum Content Light Level) is the highest single-pixel brightness value in the entire HDR video stream, expressed in nits.

Question 5

In the context of HDR standards, what does 'electro-optical transfer function' (EOTF) describe?

Accepted Answer

How the display converts a digital code value to emitted light

Answer

The EOTF describes the mathematical relationship between a digital signal code value and the luminance output of a display device.

(HDR) High Dynamic Range Certification Practice Test

(HDR) High Dynamic Range Certification Practice Test

HDR Standards & Formats 3