使用 DaVinci Resolve 色彩管理Using DaVinci Resolve Color Management

1. 在监视器上方，点击时间线名称旁的下拉箭头，显示该项目的所有时间线。Above the viewer, click the dropdown arrow next to the timeline name to reveal all the project’s timelines.
2. 选择 Conservation Filming 时间线。Choose the Conservation Filming timeline.

这条时间线包含来自多种摄影机的素材，大部分是 Blackmagic Design 的 Pocket 4K 和 6K，此外还有副机 Sony、无人机 DJI 以及 GoPro 的镜头。它们的 gamut 和 gamma 各不相同。This timeline contains shots from several different cameras. The majority of the material comes from Blackmagic Design’s Pocket 4K and 6K cameras. However, we also have a shot from our secondary camera, which is a Sony, a drone, which is a DJI, and also a GoPro. All these clips have their own gamut and gamma profiles.

1. 在时间线上点击第四个缩略图。In the timeline, click the fourth thumbnail.

和许多数字电影摄影机的素材一样，这些 log 风景素材在电视或电脑显示器上看起来并不理想——虽然拥有宽色调范围和宽色域，画面却显得平淡且欠饱和。监视器只能识别它认识的 profile，因此不知道如何正确还原这些数字电影摄影机的素材。Resolve Color Management（RCM）是把来自不同摄影机的素材统一成目标输出的最简单、最准确的方法。Like many clips from digital cinema cameras, these scenic log clips are not intended to look perfect on a TV or computer display for example. Although they have a wide tonal range and a wide color gamut, they look flat and undersaturated. Your monitor is expecting a profile that it understands, so it has no idea how these digital cinema camera clips should look. Resolve color management (RCM) is the easiest and most accurate way to unify different clips from different cameras so they all match your desired output.

1. 点击屏幕右下角的 Project Settings 图标。Click the Project Settings icon in the bottom right corner of the screen.
2. 在弹出的窗口中选择 Color Management 类别。Select the Color Management category from the window that pops up.
3. 在 Color Science 下拉菜单中选择 DaVinci YRGB Color Managed。In the Color Science dropdown menu, choose DaVinci YRGB Color Managed.

开启色彩管理后，Color Science 菜单下方会出现新的下拉菜单，默认开启 Automatic color management。该预设菜单包含 SDR 和 HDR 两项，可通过 Color processing mode 菜单选择。SDR 用于标准动态范围的源素材和输出；本时间线中既有 log HDR（高动态范围）源素材，也有 SDR 素材。Enabling color management presents a new dropdown menu below the Color Science menu. By default, Automatic color management is turned on. This preset menu contains two settings, either SDR or HDR, which can be chosen from the Color processing mode menu. SDR is the choice for standard dynamic range source media, and output. The media in our timeline is a mix of log HDR (high dynamic range) source media and SDR media.

1. 在 Resolve Color Management Preset 下拉菜单中选择 HDR。In the Resolve Color Management Preset dropdown menu, choose HDR.

该预设虽然仍以 SDR 为输出目标，但当素材中混合了 HDR log 和 SDR 素材时，它是最佳选择，因为它能保留 HDR 源素材中的超高光部分。Although this preset is still targeting an SDR output, it is the best choice when using a mix of HDR log and SDR clips because it preserves the super-bright highlights contained in HDR source media.

Output Color Space 应根据最终输出交付来设置。由于本项目输出为 SDR，因此保持 SDR Rec709 不变。这是许多显示设备（包括标准电视）的通用设置。The output color space should be set for your final output delivery. Because our project will be output to SDR, we’ll leave this menu set to SDR Rec709. This is the standard setting for many displays, including standard TVs.

1. 点击 Save 关闭设置，同时留意 Viewer 的变化。Click Save to close the settings but keep an eye on the viewer.

使用 DaVinci Resolve 色彩管理时，部分源素材格式（如 RAW 文件，以及部分 QuickTime 和 MXF 封装的文件）自带色彩 gamut 和 gamma 信息。如果文件中带有这些 metadata 标签，RCM 会自动读取并应用正确的源素材设置。当前素材均带有标签并已完成色彩管理，因此在 HD 监视器或电脑屏幕上看起来更亮、色彩更丰富。When using DaVinci Resolve color management, some source clip formats like RAW files, as well as some QuickTime and MXF wrapped files, include information about the color gamut and gamma. If these metadata tags are present in the files, RCM can automatically read them and apply the correct settings for the source clips. This is the case with the clips we have now. They are all tagged and color managed, so now they look brighter and more colorful on our HD monitor or computer screen.

不过，实际素材中很可能有一些并不包含 metadata 标签，下面演示如何为未自动识别的源素材手动设置 Input Color Space。However, you will likely have some content that does not include metadata tags, so let’s walk through how you might manually set the Input Color Space for source clips that are not set automatically.

通常应将 Input Color Space 的值改为与拍摄素材所用设备相匹配。默认情况下，无 metadata 的素材会被应用 Rec709 Gamma 2.4，这通常适合 HD 拍摄的素材，但也会遇到其他格式。Typically, you want to change the Input Color Space value to match the device that recorded the imported clips. By default, a Rec709 Gamma 2.4 setting is applied to clips without metadata. This is probably suitable for your HD recorded clips, but you will come across other formats.

1. 在时间线上选中第 17 个片段，该片段来自 GoPro 相机。Select clip 17 in the timeline. This clip is from a GoPro camera.

进入 Project Settings，关闭 Color Management。Go into the Project Settings and turn off the Color Management.

你会发现 GoPro 片段没有变化。由于它采用 Rec709 拍摄，与输出 profile 一致，因此即便此时没有 metadata，影响也不大。You will see the GoPro clip does not change. Since it was shot in a Rec709 profile, it simply matches the output profile, so while the clip might have no metadata at this stage, it doesn’t really matter.

1. 进入 Project Settings，重新开启色彩管理。Go into the Project Settings and turn Color Management back on.

对于没有 metadata 标签的片段，可以在时间线上单独设置，也可以在 bin 中成组设置。When you have clips without metadata tags, you can manually set those clips individually from the timeline or in groups from a bin.

1. 在时间线上选中 clip 18。这是一段 DJI 无人机拍的画面，看起来仍然很平。原因在于该片段没有 DaVinci Resolve 可读取的 metadata，因此无法识别其 profile。Click clip 18 in the timeline. This is a shot from a DJI drone, and it still looks very flat. This is because there’s no metadata in the clip that DaVinci Resolve can read, so it cannot understand the profile.
2. 在时间线缩略图上右键，选择 Input Color Space > DJI > D-Gamut/D-Log。画面会立即调整，不再发灰。Right-click the thumbnail in the timeline and choose Input Color Space > DJI > D-Gamut/D-Log. The clip will adjust and will no longer look flat.

注意，到这一步你并没有真正对片段做色彩校正（color correction），画面看起来变好只是 gamma 与 gamut 被统一到了适合 SDR 显示与输出设备的规范上。如果原片过曝，它仍然过曝；如果原片白平衡偏色，它仍然偏色。接下来，你可以用之前学过的技巧，在色彩管理的工作空间里继续调整对比度、白平衡等参数。Note that you have not color corrected these clips, although they may appear improved. If the clips were shot overexposed, they will appear overexposed. If they were shot with the incorrect white balance, they will display incorrect white balance. All you have done is correct the different gamma curves and color gamuts, so they are uniformly set to suit your SDR display device and file output. From here, you can use the techniques you learned earlier to correct contrast, white balance, etc., in the color-managed workspace.

调色过程中你可能需要反复播放片段来确认每一步效果，连续听同样的声音难免枯燥，所以现在把音频关掉。When grading this sequence, you may find yourself playing the clips repeatedly to check certain processes you are applying. Playing back the audio continuously may get a little repetitive, so at this stage we will turn it off.

1. 切换到 Edit page，点击电平表旁的 Mute按钮；也可以留在 Color page，通过 Fairlight 菜单选择 Monitoring > Mute来实现。Go to the edit page and click the Mute button next to the audio level. Alternatively, you can stay in the color page and go to the Fairlight menu and choose Monitoring > Mute.