Cinematographer
Aus DoP-Perspektive ist dieses Element essentiell für die visuelle Gestaltung. Es ermöglicht mir die gewünschte Farbstimmung und das ästhetische Bild konsistent umzusetzen.
HSI Mode: color control system on RGB LED film lights that adjusts hue, saturation, and intensity for precise color tuning.
Overview
HSI stands for Hue, Saturation, and Intensity. It is one of the standard color control modes on color-mixing LED film lights (RGB, RGBW, or RGBWW fixtures) and is found on practically all modern full-color lights, such as those from Aputure, Astera, or ARRI. Unlike direct RGB mixing, where three individual color channels are balanced against each other, HSI is based on human color perception: you first select a hue, then determine its purity, and finally set the intensity. This makes operation on set more intuitive and faster.
The Three Parameters
- Hue: Selects the color on the color wheel. The value is given in degrees from 0° to 360° (e.g., Red, Yellow, Green, Blue, Magenta).
- Saturation: Controls the purity of the color, i.e., the ratio between the selected hue and white. Low saturation results in pale, pastel tones; high saturation results in strong, rich colors.
- Intensity: Regulates the overall brightness of the light, regardless of hue and saturation.
Distinction from Other Modes
HSI is just one of several operating modes that color-mixing LED lights typically offer:
| Mode | Purpose |
|---|---|
| CCT | Pure white light along the Kelvin scale (color temperature), often with Green/Magenta correction |
| HSI | Color mixing via hue, saturation, and intensity |
| RGB / RGBW | Direct input of individual color channel values |
| FX / Effects | Predefined lighting effects (fire, police light, TV flicker, etc.) |
Some manufacturers extend HSI: Aputure, for example, offers HSIC+ on newer lights, which additionally incorporates an adjustable white point (CCT) and a Plus/Minus Green correction to mix color and white light more cleanly and allow for softer transitions.
Use on Set
HSI Mode is the fastest method to set a specific color without using gels: select the desired hue, adjust saturation and intensity, done. It is suitable for colored backgrounds and accents, effect lighting, recreating practical sources, and mood lighting. Since the values can be precisely noted and reproduced, HSI also facilitates restoring a look during pick-up shoots.
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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Test your knowledge
Quiz
1. Zu welchem Department gehört „HSI-Modus"?
2. Wie viele verschiedene Fachperspektiven bietet dieser Eintrag?