ISF HDR Standards & Tone Mapping 1 — Questions and Answers
Question 1: What does HDR stand for in modern display technology?
- High Dynamic Range (Correct answer)
- High Definition Resolution
- Hybrid Display Rendering
- High Data Rate
Correct answer: High Dynamic Range
HDR stands for High Dynamic Range, referring to the greater luminance range between the darkest and brightest output a display can produce.
Question 2: Which HDR format uses only static metadata applied uniformly to the entire content?
- Dolby Vision
- HDR10 (Correct answer)
- HDR10+
- HLG
Correct answer: HDR10
HDR10 uses static metadata (SMPTE ST 2086) set once for the entire content, unlike dynamic metadata formats that adjust per scene or frame.
Question 3: What is the theoretical maximum luminance that SMPTE ST 2084 (PQ) was designed to represent?
- 1,000 nits
- 4,000 nits
- 10,000 nits (Correct answer)
- 100 nits
Correct answer: 10,000 nits
SMPTE ST 2084 was designed to encode up to 10,000 nits, which represents the approximate limit of human visual tolerance.
Question 4: HLG (Hybrid Log-Gamma) was jointly developed by which two broadcasting organizations?
- Dolby and Netflix
- BBC and NHK (Correct answer)
- Samsung and LG
- SMPTE and ITU
Correct answer: BBC and NHK
HLG was developed jointly by BBC and NHK as a broadcast-friendly HDR standard that maintains backward compatibility with SDR infrastructure.
Question 5: What does EOTF stand for in display calibration terminology?
- Enhanced Output Transfer Function
- Electro-Optical Transfer Function (Correct answer)
- Extended Optical Tone Format
- Electronic Output Tone Factor
Correct answer: Electro-Optical Transfer Function
EOTF (Electro-Optical Transfer Function) defines the relationship between an encoded electrical signal and the resulting light output from a display.
Question 6: Which metadata standard specifies the Mastering Display Color Volume (MDCV) used in HDR10?
- SMPTE ST 2048
- SMPTE ST 2086 (Correct answer)
- SMPTE ST 2084
- CTA-861
Correct answer: SMPTE ST 2086
SMPTE ST 2086 defines the static mastering display color volume metadata, including peak luminance and color primaries of the grading monitor.
Question 7: What does MaxCLL (Maximum Content Light Level) specify in HDR10 metadata?
- The maximum average luminance across all frames
- The luminance of the brightest single pixel anywhere in the content (Correct answer)
- The display's maximum luminance capability
- The tone mapping curve ceiling
Correct answer: The luminance of the brightest single pixel anywhere in the content
MaxCLL specifies the luminance of the single brightest pixel found anywhere in the entire content stream, used to guide tone mapping decisions.
ISF HDR Standards & Tone Mapping 1
What does HDR stand for in modern display technology?