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. Compatible with the F10 barndoors, this F10 Fresnel Attachment for LS 600d LED Light from Aputure allows smooth focusing of the light's beam spread from a tight 15° to a 45° medium flood. The Fresnel's design has built-in ventilation to prevent overheating while thwarting spill light.