The First Ever The Aputure F10 Fresnel is the first industry-standard 10-inch Fresnel made for modular Bowens Mount fixtures. With its wide 250mm (9.84in.) glass Fresnel, the F10 both immensely intensifies the output of a point-source LED, but also results in a quality of light lighting technicians will find similar to a Tungsten 5K or Studio 2K. Intensely Bright The F10 Fresnel functions at its best when paired with the Aputure LS 600d Pro, a 600W Daylight COB LED. Together, this combination eclipses Studio 2K Tungsten lights, and approaches the intensity of 5K Tungsten fixtures at flood. With a combined flood output of 11,440 lux and spot output of 29,300 lux at 3 meters, The 600d Pro and F10 Fresnel even compete on par with higher-powered HMIs.