Using the ACES CDL Grading Mode

figure 1: ACES grading controls

Silverstack XT has the capability of reproducing ACES workflows. Six different versions of the ACES workflows are available from the Preferences panel: v. 1.0.2, v. 1.0.2, v 1.0.0, v 0.7.1, v 0.7.0 and v 0.2.0 (see fig. 2). These six ACES versions have different IDTs (Input Device Transforms) and ODTs (Output Device Transforms). Please, make sure that the ACES version used in Silverstack XT matches the one used during the post production process for maximum color accuracy.

The grading nodes displayed in the ACES mode are divided in two parts:

• ACES color transformation panel

• CDL controls

Additionally, Silverstack XT offers the ACES CDL Advanced grading mode. This grading mode lets you add multiple grading nodes between the IDT and ODT for advanced workflows.

Managing ACES Versions

In the Silverstack preferences you can manage the available ACES versions and transforms:

Fig. 2: ACES preference panel

The dropdown lets you select the ACES version for new looks. Every new look will be initialized with the ACES version selected in the dropdown in the preferences.

That means that every look in the library made with an ACES grading mode has an associated ACES version (you can find that version in the “ACES Mode” column in the Silverstack library). Saving looks with different ACES versions to the library will make it easy to compare the look of different ACES versions effortlessly.

In the section “Available ACES Transforms” you can find the available ACES versions and its associated transforms. The icon in the status bar will either signalize an available set of transforms (green checkmark) or a set of transforms that can be downloaded from the servers (download icon with downwards arrow).

Click the button “Check for New Versions” at the bottom of the preferences window to see if new ACES versions are available to download from the Pomfort servers.

Supported ACES IDT and ODT formats

Before starting to create your grades, select the correct IDT (matching your camera system) and the ODT (matching the output display color space) from the color transformation panel. LiveGrade Pro currently offers the following set of IDTs and ODTs:

• ACEScc v. 1.0.2
  • IDT
    • AMPAS
      • ACESproxy v1.0.1/1.0.2
      •  Reverse Rec.709 (ODT) v1.0.1/1.0.2
    • ARRI
      • Alexa Log-C EI800 v3
    • Canon
      • EOS C100 (A) D55 v1.0
      • EOS C100 (A) Tungsten v1.0
      • EOS C300 (A) D55 v1.0
      • EOS C300 (A) Tungsten v1.0
      • EOS C300 mkII CanonLog2 BT2020(B) D55 v1.0
      • EOS C300 mkII CanonLog2 BT2020(B) Tungsten v1.0
      • EOS C300 mkII CanonLog2 CinemaGamut(A) D55 v1.0
      • EOS C300 mkII CanonLog2 CinemaGamut(A) Tungsten v1.0
      • EOS C300 mkII CanonLog BT2020(D) D55 v1.0
      • EOS C300 mkII CanonLog BT2020(D) Tungsten v1.0
      • EOS C300 mkII CanonLog CinemaGamut(C) D55 v1.0
      • EOS C300 mkII CanonLog CinemaGamut(C) Tungsten v1.0
      • EOS C500 CinemaGamut(A) D55 v1.1.1
      • EOS C500 CinemaGamut(A) Tungsten v1.1.1
      • EOS C500 DCI-P3 D55 v1.1.1
      • EOS C500 DCI-P3 Tungsten v1.1.1
    •  Panasonic
      • V35 v070
    • Sony
      • F35 Slog1
      • F55/F65 Slog2 Daylight
      • F55/F65 Slog2 Tungsten
  • ODT
    • AMPAS
      • P3 ST2084 D60 1000nits v1.0.1/1.0.2
      • P3 ST2084 D60 2000nits v1.0.1/1.0.2
      • P3 ST2084 D60 4000nits v1.0.1/1.0.2
      • P3 v1.0.1/1.0.2
      • Rec.2020 100nits (dim) v1.0.1/1.0.2
      • Rec.2020 ST2084 1000nits v1.0.1/1.0.2
      • Rec.709 100nits v1.0.1/1.0.2

• ACEScc v. 1.0.1
  • IDT
    • AMPAS
      • ACESproxy v1.0.1
      •  Reverse Rec.709 (ODT) v1.0.1
    • ARRI
      • Alexa Log-C EI800 v3
    • Canon
      • EOS C100 (A) D55 v1.0
      • EOS C100 (A) Tungsten v1.0
      • EOS C300 (A) D55 v1.0
      • EOS C300 (A) Tungsten v1.0
      • EOS C300 mkII CanonLog2 BT2020(B) D55 v1.0
      • EOS C300 mkII CanonLog2 BT2020(B) Tungsten v1.0
      • EOS C300 mkII CanonLog2 CinemaGamut(A) D55 v1.0
      • EOS C300 mkII CanonLog2 CinemaGamut(A) Tungsten v1.0
      • EOS C300 mkII CanonLog BT2020(D) D55 v1.0
      • EOS C300 mkII CanonLog BT2020(D) Tungsten v1.0
      • EOS C300 mkII CanonLog CinemaGamut(C) D55 v1.0
      • EOS C300 mkII CanonLog CinemaGamut(C) Tungsten v1.0
      • EOS C500 CinemaGamut(A) D55 v1.1.1
      • EOS C500 CinemaGamut(A) Tungsten v1.1.1
      • EOS C500 DCI-P3 D55 v1.1.1
      • EOS C500 DCI-P3 Tungsten v1.1.1
    •  Panasonic
      • V35 v070
    • Sony
      • F35 Slog1
      • F55/F65 Slog2 Daylight
      • F55/F65 Slog2 Tungsten
  • ODT
    • AMPAS
      • P3 v1.0.1
      • Rec.2020 100nits (dim) v1.0.1
      • Rec.709 100nits v1.0.1

• ACESlog v. 1.0.0
  • IDT
    • ACESproxy (ACESlog v. 1.0.0)
    • Alexa v3 EI800 (ACESlog v. 1.0.0)
    • Canon EOS C300 mkII CanonLog BT2020(D) D55 v. 1.0
    • Canon EOS C300 mkII CanonLog BT2020(D) Tungsten v. 1.0
    • Canon EOS C300 mkII CanonLog CinemaGamut(C) D55 v. 1.0
    • Canon EOS C300 mkII CanonLog CinemaGamut(C) Tungsten v. 1.0
    • Canon EOS C300 mkII CanonLog2 BT2020(B) D55 v. 1.0
    • Canon EOS C300 mkII CanonLog2 BT2020(B) Tungsten v. 1.0
    • Canon EOS C300 mkII CanonLog2 CinemaGamut(A) D55 v. 1.0
    • Canon EOS C300 mkII CanonLog2 CinemaGamut(A) Tungsten v. 1.0
    • Canon EOS CinemaGamut(A) D55 (ACESlog v. 1.0.0)
    • Canon EOS CinemaGamut(A) Tungsten (ACESlog v. 1.0.0)
    • Canon EOS DCI-P3 D55 (ACESlog v. 1.0.0)
    • Canon EOSDCI-P3 Tungsten (ACESlog v. 1.0.0)
    • Panasonic V35 v070 (ACESlog v. 1.0.0)
    • Reverse Rec.709 (ODT) (ACESlog v. 1.0.0)
    • Sony Slog1 (F35) (ACESlog v. 1.0.0)
    • Sony Slog2 (F55/F65) Daylight (ACESlog v. 1.0.0)
    • Sony Slog2 (F55/F65) Tungsten (ACESlog v. 1.0.0)
  • ODT
    • P3
    • Rec.2020 100nits dim (ACESlog v. 1.0.0)
    • Rec.709 100nits (ACESlog v. 1.0.0)
• ACESlog v. 0.7.1
  • IDT
    • Alexa v3 EI800 (ACESlog v. 0.7.1)
    • Canon EOS CinemaGamut(A) D55 v1.1 (ACESlog v. 0.7.1)
    • Canon EOS CinemaGamut(A) Tungsten v1.1 (ACESlog v. 0.7.1)
    • Canon EOS DCI-P3 D55 v1.1 (ACESlog v. 0.7.1)
    • Canon EOSDCI-P3 Tungsten v1.1 (ACESlog v. 0.7.1)
    • Panasonic V35 v070 (ACESlog v. 0.7.1)
    • Sony Slog1 (F35) (ACESlog v. 0.7.1)
    • Sony Slog2 (F55/F65) Daylight (ACESlog v. 0.7.1)
    • Sony Slog2 (F55/F65) Tungsten (ACESlog v. 0.7.1)
  • ODT
    • P3 (ACESlog v. 0.7.1)
    • Rec.709 (ACESlog v. 0.7.1)
• ACESlog v. 0.7.0
  • IDT
    • Alexa
    • Canon EOS CinemaGamut(A) D55 v1.1
    • Canon EOS CinemaGamut(A) Tungsten v1.1
    • Canon EOS DCI-P3+A D55 v1.1
    • Canon EOS DCI-P3+A Tungsten v1.1
    • Panasonic Varicam 35
    • Sony F35
    • Sony F55 Daylight
    • Sony F55 Tungsten
  • ODT
    • Rec. 709
    • DCI-P3
• ACESlog v. 0.2.0
  • IDT
    • Alexa
    • Sony
  • ODT
    • Rec. 709
    • DCI-P3

The CDL controls behave the same way as in the CDL Grade mode and can also be exported as usual from a saved grade. ACES grades can also be exported as 3D LUTs, including the CDL values, IDT and ODT.

For more information about exporting Looks from the Silverstack Look Library see the article Exporting Looks from Silverstack.

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