Cinematographer
Aus DoP-Perspektive ist dieses Element essentiell für die visuelle Gestaltung. Es ermöglicht mir die gewünschte Farbstimmung und das ästhetische Bild konsistent umzusetzen.
Lee 201 (Full C.T. Blue) is a blue conversion gel that shifts tungsten light (3200 K) to daylight (5700 K) color temperature.
Overview
Lee 201, marketed by the manufacturer as Full C.T. Blue (Full Colour Temperature Blue, often abbreviated as CTB), is a color correction filter (conversion filter) from the British manufacturer LEE Filters. It is one of the most widely used lighting filters on set and converts the warm light color of artificial light/halogen spotlights (Tungsten, 3200 K) to the cooler tone of daylight (5700 K). With the full correction, Tungsten units can be matched in color to incident daylight or to HMI/LED daylight sources.
The filter belongs to the same product family as the weaker gradations Lee 202 (Half C.T. Blue) and Lee 203 (Quarter C.T. Blue), which allow for partial corrections.
Technical Data
| Property | Value |
|---|---|
| Designation | 201 Full C.T. Blue (CTB) |
| Manufacturer | LEE Filters |
| Function | Conversion 3200 K → 5700 K |
| Mired Shift | -137 |
| Transmission (Tungsten) | 35 % |
| Transmission (Daylight) | 34 % |
The negative Mired shift of -137 indicates the cooling (blue-shifting) effect. Since the filter only transmits about a third of the light, the light loss when using the full correction is considerable.
On-Set Usage
Typical applications:
- Matching Tungsten to Daylight: Placed in front of artificial light sources (e.g., Fresnel, Blondel/Redhead) or attached to the barn doors so their light matches the camera's daylight white balance.
- Window/Mixed Light Situations: To match interior artificial light to incident daylight or HMI sources.
- Creative Use: Deliberate cool, bluish light character, for example, for night or moonlight effects.
Lee 201 is produced as a heat-resistant polyester film and is available in sheets as well as rolls of various widths. Due to the significant light loss, gaffers often opt for the partial corrections 202 or 203 when working with a tight lighting budget.
From the crafts
Perspectives
Producer
Diese professionelle Lösung erhöht die Produktionseffizienz und reduziert Post-Production-Anforderungen. Sie ermöglicht flexible, schnelle Anpassungen während des Drehs.
Gaffer
Als Gaffer ist dies ein unverzichtbares Werkzeug meines täglichen Handwerkszeugs. Es ermöglicht mir professionelle Lichtkontrolle und schnelle Anpassungen auf Set, was Zeit spart und Qualität sichert.
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Quiz
1. Zu welchem Department gehört „Lee 201 (Full CTB)"?
2. Wie viele verschiedene Fachperspektiven bietet dieser Eintrag?