Cinematographer
Bei ACEScg schaffe ich am Set die Grundlagen – Tracking-Marker, Clean Plates, korrektes Licht für Compositing.
color grading din color correction primary correction secondary correction power window qualifier 1d lut
ACEScg is the linear ACES variant for VFX and CGI, optimized for physically-correct rendering and compositing.
Definition
ACEScg (ACES Computer Graphics) is a linear encoding variant of ACES, specifically developed for visual effects, CGI rendering, and compositing. The linear color space allows for physically correct light calculations.
Why Linear for VFX?
Physical Correctness
- Light behaves linearly in the real world
- Double the amount of light = double the brightness value
- Render engines calculate physically correctly
Compositing Precision
- Additive blending works mathematically correctly
- Motion blur, depth of field: precise results
- No gamma artifacts
ACEScg in the VFX Workflow
Plate (LogC/S-Log)
↓ IDT → ACES
↓
ACEScg (linear working color space)
↓
CGI Rendering in ACEScg
↓
Compositing in ACEScg
↓
Export → Grading (ACEScct)Comparison of ACES Variants for VFX
| Task | Recommended Variant |
|---|---|
| Rendering | ACEScg |
| Compositing | ACEScg |
| Color Grading | ACEScct |
| Archiving | ACES2065-1 |
Practical Implementation
In Nuke
Read Node → OCIOColorSpace (Plate → ACEScg)
↓
Comp Work
↓
Write Node → OCIOColorSpace (ACEScg → Output)In Maya/Houdini
- Set Color Management to ACES
- Rendering Space: ACEScg
- Texture Input: Linearize
Challenges
- Display: ACEScg looks "wrong" without a View Transform
- Textures: Must be correctly linearized
- Assets: All must be in the same color space
See Also
- ACES – Overall System
- Compositing – Image Assembly
- CGI – Computer Generated Imagery
From the crafts
Perspectives
Director
ACEScg erweitert meine kreativen Möglichkeiten enorm. Was früher unmöglich war, ist heute machbar – wenn man es richtig plant.
Producer
ACEScg kann Budget retten oder sprengen. Frühe Planung und klare Kommunikation sind entscheidend für realistische Kalkulation.
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Test your knowledge
Quiz
1. Was beschreibt „ACEScg" am besten?
2. Zu welchem Department gehört „ACEScg"?
3. Wie viele verschiedene Fachperspektiven bietet dieser Eintrag?