Calumet Pro4 4 High-density LED Crystals LED on Camera Video Light with Built-in Barn Doors and a Clip-on Wide-beam Diffusion Filter That Produces a Soft-box Effect. n extremely efficient and compact on-camera video light with 4 bright LED lights, creating an impressive 1200 lux of 5600k at a 60 degrees angle of illumination. Luminous Flux: 850-1200Lux - Bulb: Power LED Dimensions L x W x H: 4.5 x 3.3 x 4.3"