Cinematographer
RGGB ist das Fundament der digitalen Farberfassung. Die Dopplung der Grün-Pixel gibt mir bessere Helligkeitsauflösung, was bei der Luminanz-Erhaltung in der Farbkorrektur hilft.
Color filter array pattern used in most digital image sensors where each pixel is covered by either a red, green, or blue filter in a repeating 2x2 mosaic with two green pixels, one red, and one blue – mimics human vision's greater sensitivity to green and requires demosaicing to produce full-color images.
What is RGGB?
RGGB is the standard Color Filter Array (CFA) on digital image sensors. In this Bayer pattern, each pixel is covered by a color filter – two green, one red, one blue per 2x2 block – to capture color information.
Basic Principle
| Aspect | Description |
|---|---|
| Pattern | 2x2 Mosaic |
| Composition | 50% G, 25% R, 25% B |
| Inventor | Bryce Bayer (Kodak, 1976) |
| Purpose | Color capture with single sensor |
Pattern Arrangement
| Position | Filter |
|---|---|
| Top Left | Red (R) |
| Top Right | Green (G) |
| Bottom Left | Green (G) |
| Bottom Right | Blue (B) |
Why 50% Green?
| Reason | Explanation |
|---|---|
| Human Perception | Eye is more sensitive to green |
| Luminance | Green contributes most brightness |
| Sharpness | Better detail resolution |
| Contrast | Higher sensitivity |
Demosaicing
| Aspect | Description |
|---|---|
| Definition | Interpolation of missing colors |
| Process | Algorithm-based |
| Goal | Full-color pixel |
| Quality | Algorithm-dependent |
Demosaicing Algorithms
| Algorithm | Characteristics |
|---|---|
| Bilinear | Simple, fast |
| VNG | Variable Number Gradients |
| AHD | Adaptive Homogeneity |
| AMaZE | High-Quality |
Artifacts
| Artifact | Cause |
|---|---|
| Moiré | Fine patterns |
| Color Fringing | Interpolation errors |
| False Color | Edge problems |
| Zipper Effect | Diagonal edges |
Resolution
| Aspect | Description |
|---|---|
| Nominal | Pixel count |
| Effective | ~70% due to CFA |
| Color Resolution | Half nominal |
| Luma Resolution | ~Full nominal |
Alternative CFAs
| Pattern | Difference |
|---|---|
| RGBW | + White pixel |
| RGBE | + Emerald |
| X-Trans | 6x6 irregular |
| Quad Bayer | 4-pixel groups |
Fuji X-Trans
| Aspect | Description |
|---|---|
| Pattern | 6x6 non-periodic |
| Advantage | Less moiré |
| Disadvantage | More complex demosaicing |
| Usage | Fujifilm X-Series |
Quad Bayer
| Feature | Description |
|---|---|
| Concept | 2x2 same color |
| Advantage | Pixel binning |
| Low-Light | Better performance |
| Smartphone | Widely used |
Sensor Without CFA
| Type | Description |
|---|---|
| Foveon X3 | Three layers |
| Monochrome | No filter |
| 3-CCD | Separate sensors |
| 3-CMOS | Separate sensors |
RAW Processing
| Phase | Description |
|---|---|
| Capture | Bayer data |
| Processing | Demosaicing |
| Output | RGB image |
| Compression | Optional |
ISO and RGGB
| Aspect | Relationship |
|---|---|
| Signal | Separate per channel |
| Noise | Varies by color |
| Green | Typically best SNR |
| Blue | Often highest noise |
White Balance
| Element | Description |
|---|---|
| Multiplier | Per-channel adjustment |
| Green | Typically reference |
| Red/Blue | Scaled to green |
| RAW | Possible before demosaicing |
Camera Implementations
| Manufacturer | CFA Variant |
|---|---|
| Canon | Standard RGGB |
| Nikon | Standard RGGB |
| Sony | RGGB + Quad |
| RED | RGGB |
Best Practices
| Practice | Reason |
|---|---|
| RAW Shooting | Maximum color data |
| Proper Exposure | Minimize noise |
| Quality Demosaic | Reduce artifacts |
| Consider OLPF | Anti-aliasing |
Today
RGGB remains the dominant standard for digital image sensors – from smartphones to cinema cameras. Variants like Quad Bayer improve low-light performance, while X-Trans and other alternatives offer specific advantages. Understanding the Bayer pattern is fundamental for optimizing RAW workflows and maximizing image quality.
From the crafts
Perspectives
Director
RGGB beeinflusst indirekt meinen visuellen Look. Alternative Muster wie RGBW verändern das Verhältnis von Auflösung zu Lichtempfindlichkeit – wichtig für Low-Light-Szenen.
Producer
Das Bayer-Pattern ist der Standard, auf dem praktisch alle Consumer- und viele Cine-Kameras basieren. Es beeinflusst die grundlegende Bildqualität unserer Aufnahmen.
More in the lexikon
Related terms
Test your knowledge
Quiz
1. Zu welchem Department gehört „RGGB / Bayer-Muster / Bayer-Filtermatrix"?
2. Wie viele verschiedene Fachperspektiven bietet dieser Eintrag?