HDR Color Science & Dynamic Range 3

Question 1

Which mastering display standard is commonly used to grade HDR content at 1000 nits peak luminance?

Accepted Answer

P3-D65 with ST 2084

Answer

P3-D65 with the ST 2084 PQ transfer function at 1000 nits is a widely used mastering color space for HDR content.

Question 2

What is 'tone mapping' in HDR post-production?

Accepted Answer

Converting HDR content to fit within the limits of a lower-dynamic-range display

Answer

Tone mapping is the process of remapping high-dynamic-range luminance values to fit within the narrower range of a target display or output.

Question 3

What is the approximate luminance of a typical SDR reference white in a broadcast mastering environment?

Accepted Answer

100 nits

Answer

SDR mastering reference white is standardized at 100 nits (cd/m²) in a controlled broadcast grading environment.

Question 4

Which of the following color spaces has the largest gamut relative to human vision?

Accepted Answer

BT.2020

Answer

BT.2020 has the widest color gamut of those listed, covering approximately 75.8% of the CIE 1931 color space, compared to ~35% for sRGB/BT.709.

Question 5

In HDR grading, what does 'MaxFALL' stand for?

Accepted Answer

Maximum Frame Average Light Level

Answer

MaxFALL stands for Maximum Frame Average Light Level, representing the maximum average luminance value across all frames in a piece of content.

(HDR) High Dynamic Range Certification Practice Test