Compact 2500 is a 2500-watt high-output professional lighting instrument.
Technical Details
The Compact 2500 achieves a light output of approximately 240,000 lumens with a beam angle between 15° (spot) and 60° (flood). The housing typically measures 420 x 310 x 280 mm with a weight of 18-22 kg, including the lamp. The lamp life averages 750 operating hours with a constant color temperature. An electronic ballast (EVG) with IGBT technology ensures flicker-free operation, even for high-speed shooting up to 1000 fps. Variants include the Compact 2500/4 with improved UV filtering and the Compact 2500 SE (Special Edition) with an expanded accessory system for barn doors and color filters.
History & Development
HMI technology was developed by Osram in 1969, with the first compact 2500W versions appearing on the market in the mid-1980s. Arri introduced its first Compact series in 1987 in response to the demand for lighter daylight lamps for exterior shoots. The introduction of electronic ballasts in 1994 eliminated the characteristic 50Hz flicker of older magnetic ballasts. Modern LED panels today achieve similar light output with significantly lower power consumption, but HMI lights remain the standard for large-area illumination.
Practical Use in Film
The Compact 2500 primarily serves as fill light in daylight shoots or as the main light source in medium-sized interiors. In "Blade Runner 2049," Roger Deakins used several Compact 2500s for the apartment scenes to simulate harsh daylight through windows. Typical workflow: positioning 3-5 meters from the subject, using diffusion material like 216 or frost for softer illumination. Advantage: constant color temperature over the entire lamp life. Disadvantage: warm-up time of 3-4 minutes and high power consumption of 2.8 kW, including the ballast.
Comparison & Alternatives
Unlike tungsten lamps of the same wattage, the Compact 2500 produces four times more light with half the heat generation. LED panels like the SkyPanel S120-C today offer variable color temperature and instant on/off, but only achieve 60% of the point light intensity. For large exterior shots, the 6K or 12K HMI remains standard, while for smaller interiors, 1.2K HMIs or high-quality LED systems are increasingly preferred. The Compact 2500 perfectly fills the gap between portable LED technology and large-scale lighting.