The 6K Fresnel uses an 6000-watt HMI arc lamp and a large Fresnel lens to produce a focusable daylight-balanced beam around 5600K. The Fresnel gives you smooth flood-to-spot control and the ability to make clean cuts with barn doors.
The 6K fresnel excels when you need:
Sunlight through large windows
Daylight on sound stages
Long-throw exterior lighting
Lighting large diffusion frames
Simulating daylight at night ("daylight moonlight" setups)