Cinematographer
Center Extraction gibt mir Flexibilität. Ich kann in Open Gate drehen und in Post verschiedene Formate extrahieren – oder bewusst croppen für mehr Reichweite ohne Objektivwechsel.
Using only the central portion of a camera sensor – technique to extend effective focal length, reduce vignetting with full-frame lenses, or extract different aspect ratios from larger-format footage.
What is Center Extraction?
Center Extraction (Zentrumsausschnitt) refers to the use of only the central portion of a camera sensor or captured image. This can be achieved in-camera through sensor modes or in post-production by cropping.
Applications
| Application | Description |
|---|---|
| Reframing | Adjusting the image crop in post |
| Format Extraction | Various aspect ratios |
| Focal Length Extension | Pseudo-telephoto via crop |
| Vignetting Avoidance | Utilizing the lens's sweet spot |
| Stabilization | Headroom for Warp Stabilizer |
Sensor Modes (Example ARRI)
| Mode | Sensor Usage |
|---|---|
| Open Gate | Full sensor |
| 4:3 | For Anamorphic |
| 16:9 | Standard HD/UHD |
| 2.39:1 | Scope crop |
| Center Crop | Super-35 area |
Advantages
| Advantage | Description |
|---|---|
| Flexibility | Multiple formats from one take |
| Reframing | Corrections in post |
| Lens Choice | Larger pool usable |
| Stabilization | More headroom |
| Future-Proofing | Higher resolution |
Disadvantages
| Disadvantage | Description |
|---|---|
| Resolution Loss | With heavy cropping |
| Data Volume | Larger master files |
| Post-Production Effort | Additional steps |
| Focal Length Change | Consider crop factor |
Crop Factor Calculation
| Original Sensor | Crop | Factor |
|---|---|---|
| Large Format | to S35 | ~1.5x |
| Full Frame | to APS-C | ~1.5x |
| S35 | to S16 | ~1.7x |
Practical Examples
| Situation | Center Extraction |
|---|---|
| Interview | Reframing reserve |
| Anamorphic to Spherical | 4:3 extraction |
| IMAX to Standard | Various versions |
| Social Media | Vertical crops |
Workflow
| Phase | Activity |
|---|---|
| Planning | Define final format(s) |
| Shooting | Record larger format |
| Dailies | With framing guides |
| Post | Extraction, stabilization |
| Delivery | Various versions |
Framing Considerations
| Aspect | Consider |
|---|---|
| Headroom | More space at the top |
| Sides | Wider margins |
| Action | Within the safe area |
| Title Safe | For all formats |
Technical Requirements
| Aspect | Recommendation |
|---|---|
| Source Resolution | Min. 2x final resolution |
| Codec | As little compression as possible |
| Color Space | Maintain Wide Gamut |
| Metadata | Document framing |
Software for Extraction
| Program | Function |
|---|---|
| DaVinci Resolve | Reframing, stabilization |
| Premiere Pro | Crop, Scale |
| NUKE | Precise extraction |
| ACES | Color space conversion |
Multi-Format Delivery
| Format | Extraction |
|---|---|
| Cinema 2.39:1 | Scope center |
| IMAX 1.43:1 | Full Frame |
| TV 16:9 | Standard HD |
| Social 9:16 | Vertical crop |
Today
Center Extraction is a standard workflow in modern production. Cameras with large sensors and high resolutions offer flexibility for various outputs from a single master – the art lies in keeping all final formats in mind during shooting.
From the crafts
Perspectives
Director
Center Extraction ermöglicht Reframing in Post. Wenn wir breiter drehen als das Endformat, kann der Editor kleine Korrekturen vornehmen oder verschiedene Versionen liefern.
Producer
Open Gate mit Center Extraction bedeutet Flexibilität für verschiedene Auswertungen – Kino, Streaming, Social Media – alles aus einem Dreh.
More in the lexikon
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Test your knowledge
Quiz
1. Was beschreibt „Zentrumsausschnitt" am besten?
2. Zu welchem Department gehört „Zentrumsausschnitt"?
3. Wie viele verschiedene Fachperspektiven bietet dieser Eintrag?