ColorBox In-Line Color and HDR/SDR Transform v1.0 41 www.aja.com
Table 4. NBCU LUT Conversions Detailed Information
SDR > HLG DL, #1 SDR UpMap to HLG using Display Light. For use with SDR playback sources. NBCU
LUT 1 up-maps legacy SDR signals into a native HLG production using display-light
conversion.
SDR > HLG SL, #2 SDR to HLG using Scene Light. For use with SDR camera sources. Tonemaps and
matches SDR cameras with the HLG “Look” for a native HLG production using scene-
light conversion.
HLG > SDR DL, #3 HLG to SDR using Display Light. For SDR camera shading and production output.
Down-maps native HLG BT.2100 signals to SDR as a predictive LUT for legacy SDR-
BT.709 transmission.
SDR > PQ DL, #4 UpMap to PQ using Display Light. For SDR to PQ conversion preserving the artistic
intent or “SDR look.” Up-Maps legacy SDR signals into a native PQ production or
transmission.
PQ > SDR DL, #5 PQ to SDR using Display Light. For PQ to SDR conversion for transmission. Down-
maps native PQ-BT.2100 signals to SDR-BT.709 as a predictive LUT or for legacy SDR
transmission.
HLG1000 > PQ, #7 HLG 1000 Nits to PQ. For HLG to PQ conversion. BT.2100 HLG signals are converted to
BT.2100 PQ at the 1,000nits “bridge” condition so that 100% HLG maps to 1,000nits PQ.
This is a transparent conversion.
NOTE: NBCU LUT numbering goes from #5 to #7. LUT #6 is skipped intentionally.
To Next Page
