色彩管理Color Management

难度LEVELL3 · 高级L3 · Advanced 领域TOPIC调色

先学：Prerequisites: 一级调色

学习目标LEARNING OBJECTIVES

学完你能说清不同摄影机的素材为何放在一起发灰发乱，会用 RCM（Resolve Color Management）把它们统一到同一输出，并能给没有元数据的素材手动指定输入色彩空间。

概念说明CONCEPTS

色彩管理（Color Management）是把各台摄影机的"色彩方言"翻译成同一种语言的工作流程——RCM 读取素材元数据，把五花八门的色域（gamut）和伽马（gamma）统一映射到你的输出色彩空间，全程不动原始素材。

  • 问题出在色域和伽马：每家厂商都自定义自己的色域和影调曲线；Log 素材在普通显示器上发灰发淡是它的正常状态，不是拍坏了。
  • RCM 自动翻译：把项目设置里的色彩科学（Color Science）切成 DaVinci YRGB Color Managed，带元数据的素材会被自动识别并正确显示。
  • 三个色彩空间各管一段：输入色彩空间（Input Color Space）管"素材从哪来"，处理模式管"中间怎么算"，输出色彩空间（Output Color Space）管"最后交付成什么"。
  • 输出随时可换：今天交付网络 SDR 就输出 Rec.709，明天要 HDR 只改一个选项——原始宽色域信息一直都在，这是色彩管理工作流最大的红利。
  • 色彩管理 ≠ 调色：它只统一所有素材的"起点"；过曝的素材管理完还是过曝，曝光和白平衡仍要你动手。

下面这组对比就是一条 Log 素材被 RCM 正确识别前后的样子（拖动滑块查看）：

Log 素材发灰的原始显示
RCM 识别后的正常画面

操作步骤STEPS

  1. 点右下角的 Project Settings，选择 Color Management 类别项目设置中的色彩管理
  2. 把 Color Science 下拉菜单切换为 DaVinci YRGB Color Managed
  3. 按素材选处理预设：纯 SDR 素材选 SDR；混有 HDR/Log 素材选 HDR（保住高光细节），输出色彩空间保持 Rec.709
  4. 点 Save 并留意 Viewer——带元数据的素材立刻从灰蒙蒙变得正常
  5. 仍有发灰的素材：右键它在时间线上的缩略图，选 Input Color Space，按拍摄机型指定（如 DJI > D-Gamut/D-Log）手动指定输入色彩空间
  6. 想核对每条素材的识别结果：在媒体池加上 Input Color Space 列，一目了然

练习PRACTICE

  1. 找一条 Log 素材，在色彩管理开、关两种状态下各截一张图，说出色域映射到底做了什么。
  2. 给一条无元数据的素材故意指定错误的 Input Color Space，再改回正确的，观察画面从怪异到正常的变化。

常见问题FAQ

Log 素材灰蒙蒙的，是拍坏了吗？

没有。Log 保留了超出显示器能力的高光和色彩信息，发灰是它的正常状态。色彩管理负责把它映射回显示器看得懂的范围。

开了色彩管理，是不是就不用调色了？

不是。色彩管理只把不同素材拉到同一起跑线：过曝的仍过曝，偏色的仍偏色。曝光、白平衡、风格化，之后照常在节点里做。

输出色彩空间该选什么？

看交付目标：网络和普通电视一般选 Rec.709。它随时可以在交付前改，不用重做调色——这正是色彩管理工作流的好处。

为什么有的素材没有被自动识别？

它的文件里没有色彩元数据（常见于转码过的素材）。右键素材手动指定 Input Color Space，或在媒体池里批量指定即可。

Learning Objectives学习目标

After this card you can explain why clips from different cameras look gray and messy side by side, unify them with RCM (Resolve Color Management), and manually assign an input color space to clips without metadata.

Concepts概念说明

Color management is the workflow that translates every camera's "color dialect" into one shared language — RCM reads clip metadata and maps all those different gamuts and gammas onto your output color space, without touching the source media.

  • Gamut and gamma are the culprits: every manufacturer customizes its own color range and tonal curve; a log clip looking flat and washed-out on a normal display is its natural state, not a shooting mistake.
  • RCM translates automatically: switch the Color Science in Project Settings to DaVinci YRGB Color Managed, and clips carrying metadata are recognized and displayed correctly on their own.
  • Three color spaces, three jobs: the Input Color Space says where a clip comes from, the processing mode says how the math runs in the middle, and the Output Color Space says what you finally deliver.
  • Swap the output anytime: deliver Rec.709 for web SDR today, switch to HDR tomorrow by changing one menu — the wide-gamut source data is always intact. That's the biggest dividend of a managed workflow.
  • Management is not grading: it only gives every clip the same starting line; an overexposed clip is still overexposed afterward — exposure and white balance remain your job.

The pair below shows a log clip before and after RCM recognizes it correctly (drag the slider):

A log clip displayed flat and gray
The same clip after RCM recognition

Steps操作步骤

  1. Click Project Settings in the lower-right corner and choose the Color Management categoryColor management in Project Settings
  2. Set the Color Science dropdown to DaVinci YRGB Color Managed
  3. Pick a processing preset for your media: SDR for all-SDR sources; HDR when HDR/log clips are mixed in (it preserves highlight detail) — keep the output color space at Rec.709
  4. Click Save and watch the Viewer — clips with metadata instantly snap from flat to normal
  5. Still a flat clip? Right-click its timeline thumbnail, choose Input Color Space, and assign its camera profile (e.g. DJI > D-Gamut/D-Log)Manually assigning an input color space
  6. To audit every clip's assignment, add the Input Color Space column in the media pool

Practice练习

  1. Take a log clip and screenshot it with color management off and on; explain in one sentence what the gamut mapping actually did.
  2. Deliberately assign a wrong Input Color Space to a metadata-free clip, then set the right one — watch the picture go from bizarre to normal.

FAQ常见问题

My log clip looks gray and hazy — is it ruined?

No. Log keeps more highlight and color information than your display can show; flat is its normal state. Color management maps it back into a range your monitor understands.

With color management on, do I still need to grade?

Yes. Management only brings different clips to the same starting line: overexposed stays overexposed, a cast stays a cast. Exposure, white balance and looks still happen in your nodes.

Which output color space should I pick?

Follow the delivery target: Rec.709 is the norm for web and standard TVs. You can change it any time before delivery without redoing the grade — that's the point of a managed workflow.

Why wasn't one of my clips recognized automatically?

Its file carries no color metadata — common after transcoding. Right-click the clip and assign its Input Color Space manually, or set a whole bin at once in the media pool.

深度资料：色彩管理 →Deep dive: 色彩管理 →

本卡术语Terms in this card

媒体夹Bin 媒体池Media Pool 时间线Timeline 编码器Codec 预设Preset 色彩管理Color Management 色彩空间Color Space 曲线Curves Gamma（中间调）Gamma 白平衡White Balance 调色Grade 静帧Still 元数据Metadata 项目设置Project Settings 节点Node