Cinematographer
In 4:3 mode, I use the full sensor height for anamorphic lenses. The 2x squeeze then creates 2.66:1 – more height than with 16:9 anamorphic.
Sensor recording mode in classic 4:3 format (1.33:1)—primarily used for anamorphic capture, as 2x squeeze creates 2.66:1 image.
What is 4:3 Mode?
4:3 Mode is a sensor recording mode in digital cameras that utilizes the classic 4:3 aspect ratio (1.33:1). It is primarily used for anamorphic shooting, as a 2x anamorphic squeeze from 4:3 creates a 2.66:1 image.
Technical Background
| Parameter | Value |
|---|---|
| Aspect Ratio | 4:3 (1.33:1) |
| With 2x Anamorphic | 2.66:1 (cropped to 2.40:1) |
| Usage | Anamorphic Shooting |
| Sensor Area | Reduced vs. Open Gate |
Comparison of Sensor Modes (ARRI Alexa LF)
| Mode | Aspect Ratio | Resolution | Usage |
|---|---|---|---|
| Open Gate | 1.44:1 | 4448x3096 | Spherical, Max. Flexibility |
| LF 2.39:1 | 2.39:1 | 4448x1856 | Spherical Scope |
| 4:3 | 1.33:1 | 3414x2198 | Anamorphic |
| 16:9 | 1.78:1 | 3840x2160 | TV/Streaming |
Why 4:3 for Anamorphic?
| Aspect | Explanation |
|---|---|
| Sensor Utilization | Utilize full height |
| 2x Squeeze | 4:3 → 2.66:1 |
| Classic Look | Like 35mm Anamorphic |
| Bokeh | Oval bokeh emphasized |
Mathematics
| Calculation | Result |
|---|---|
| 4:3 = 1.33:1 | Recording Format |
| 1.33 × 2 = 2.66 | After De-Squeeze |
| 2.66 → 2.40 | Final Crop |
Cameras with 4:3 Mode
| Camera | 4:3 Resolution |
|---|---|
| ARRI Alexa Mini | 2.8K |
| ARRI Alexa LF | 3.4K |
| RED Komodo | 4K (6:5) |
| Sony Venice | 4K |
Workflow
On Set
| Step | Description |
|---|---|
| Select Mode | 4:3 in camera |
| Monitoring | View De-Squeezed |
| Framing | Compose for 2.40:1 |
Post-Production
| Phase | Activity |
|---|---|
| Import | Squeezed 4:3 |
| De-Squeeze | Stretch 2x horizontally |
| Crop | Crop to 2.40:1 |
| Delivery | Final Scope Image |
Advantages
| Advantage | Description |
|---|---|
| Classic Look | Like Film Anamorphic |
| Full Height | More vertical resolution |
| Bokeh | Maximum anamorphic character |
Disadvantages
| Disadvantage | Description |
|---|---|
| Less Resolution | Vs. Open Gate |
| No Reframing | Little room for maneuver in post |
| Lenses Needed | Expensive anamorphic lenses |
Today
4:3 Mode is the standard for anamorphic digital production. Anyone who wants the classic scope look with modern cameras works in 4:3 with 2x anamorphic lenses.
From the crafts
Perspectives
Director
4:3 Anamorphic gives me the most classic Scope feeling. The full sensor height combined with anamorphic characteristics – like in the golden era of widescreen cinema.
Producer
4:3 mode is the standard for premium anamorphic. Even though the resolution is reduced, the unique look justifies the choice for high-end productions.
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Test your knowledge
Quiz
1. Was beschreibt „4:3-Modus" am besten?
2. Zu welchem Department gehört „4:3-Modus"?
3. Wie viele verschiedene Fachperspektiven bietet dieser Eintrag?