Joker

Technical Details

Modern Jokers utilize COB (Chip-on-Board) LEDs, achieving color temperatures between 2700K and 6500K with a CRI of at least 95. Light output for 400-watt models is approximately 45,000 lumens at full power. V-Mount or Gold Mount batteries, depending on capacity (150-290Wh), provide between 45 and 120 minutes of runtime at 100% power. Most units feature DMX-512 control and stepless dimming from 0-100%. Common models include the Aputure 600d Pro, Arri Orbiter, or the Litepanels Gemini 2x1.

History & Development

The first generation of compact LED Jokers was launched in 2015 with the Aputure Light Storm LS C300d. Litepanels had already laid the groundwork in 2012 with the Sola series, but it was COB LED technology that enabled the current power density. In 2018, Arri introduced full-color RGB technology to this segment with the SkyPanel S30-C. Current developments focus on app-based control and integrated effects like strobe or fire simulation.

Practical Use in Film

For exterior shots, the Joker serves as a fill light for shadows or as backlight against the sun. In "1917" (2019), Roger Deakins used battery-powered LEDs for the continuous camera movements through the trenches. Indoors, it simulates natural window light or enhances existing daylight. Its quick setup without power cables makes it ideal for documentaries and run-and-gun productions. Disadvantages include limited battery life and, in some budget models, potential color shifts at extreme dimming levels.

Comparison & Alternatives

Unlike traditional HMI lights (575W to 2.5kW), Jokers produce no heat and do not require a ballast. Tube lights like the Astera Titan are longer and narrower but are less suitable as a point light source. Panel lights offer softer light but have lower light density. For high light output, HMI lights or large LED panels like the Arri SkyPanel S120-C remain the better choice, but they require mains power and larger grip equipment.