showstack / glossary / colour-temperature
Colour temperature (CCT) 色溫
The apparent warmth or coolness of white light, in kelvin: tungsten around 3200 K, daylight around 5600 K. Correlated colour temperature says where a source sits on that scale, but says nothing about how well it renders colour.
中文
白光偏暖或偏冷的表觀程度，單位為 K：鎢絲燈約 3200 K，日光約 5600 K。相關色溫只說明光源落在這條刻度的哪個位置，完全不描述其演色能力。
Regional usage
| Where | Term | Note |
|---|---|---|
| UK / US | Colour temperature / CCT | |
| HK / TW | 色溫 |
Easy to get wrong
Two fixtures at the same CCT can render skin completely differently. CCT is one axis; colour rendering (CRI, or better, TM-30 Rf and Rg) is another, and camera work cares about both.
Next to this
Sources
- ITU-R BT.709 parameter values — ITU primary
- Theatrecrafts glossary of technical theatre terms — Theatrecrafts / ABTT heritage primary
Understand the mechanism
Something wrong, or missing?
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