色彩容量 · 色彩空间Colour volume · Colour space

难度LEVELL1 · 入门L1 · Beginner 领域TOPIC调色

学习目标LEARNING OBJECTIVES

学完你能说清色彩容量是「能装多大范围的颜色」，以及「导出后颜色变了」为什么先查它。

概念说明CONCEPTS

能表示多大范围的颜色，以及这些数值怎么被解释。

  • Rec.709 / sRGB——屏幕与网络的常规色域，绝大多数交付的默认容器
  • DCI-P3——比 709 更大的红绿范围：影院放映、近年显示器
  • Rec.2020——为 HDR 准备的大容器：装得更多，但需要全链路支持
CIE 色域图：Rec.2020 / DCI-P3 / Rec.709

709 最小、P3 更大、2020 最大。色域是容器大小，不是画质高低。（图：Sakurambo / BenRG，CC BY-SA 3.0）

五个方向合起来看：▶ 五维图交互演示（按 1/2/3/4 切换四种素材）。

操作步骤STEPS

  1. 同一画面在手机、投影、调色监视器上各看一遍
  2. 「导出后颜色变了」：先查色彩空间
  3. 再查 gamma，再查白点

练习PRACTICE

动手任务

导出一条 Rec.709 视频，在手机和电脑屏幕各看一遍，记录色差。

自检清单

做完任务后逐条自查，全部能打勾才算过。 做完任务后逐条自查，全部能打勾才算过。

常见问题FAQ

导出后颜色为什么变了？

先查色彩空间，再查 gamma，再查白点。

色域越大画质越好吗？

色域是容器大小，不是画质高低。

Learning Objectives学习目标

After this card you can say what colour volume is — how wide a range of colour fits — and why "the colours changed after export" starts here.

Concepts概念说明

How large a range of colour the footage can represent, and how those numbers get interpreted.

  • Rec.709 / sRGB — the everyday gamut of screens and web; the default container for most delivery
  • DCI-P3 — wider reds and greens than 709: cinema projection, recent displays
  • Rec.2020 — the big container waiting for HDR: holds more, needs the whole chain
CIE chart: Rec.2020 / DCI-P3 / Rec.709

709 smallest, P3 bigger, 2020 biggest. A gamut is container size, not quality. (Chart: Sakurambo / BenRG, CC BY-SA 3.0)

All five axes together: ▶ the five-axis interactive chart (press 1/2/3/4).

Steps操作步骤

  1. View the same image on a phone, a projector and a grading monitor
  2. "Colours changed after export": check the colour space first
  3. Then gamma, then the white point

Practice练习

Hands-on task

Export a Rec.709 video, view it on a phone and a computer display, and note the difference.

Self-check

Work through the task, then tick every line; all checked means you own this card. Work through the task, then tick every line; all checked means you own this card.

FAQ常见问题

Why did the colours change after export?

Check the colour space first, then gamma, then the white point.

Is a bigger gamut better quality?

A gamut is container size, not quality.

本卡术语Terms in this card

导出Export 色彩空间Color Space Gamma（中间调）Gamma 调色Grade 色彩容量Color Volume 容器（封装）Container 色域Gamut PNGPNG 白点White Point