Bundle Includes: Aputure F10 Fresnel and Aputure F10 Barndoors for LS 600d Fresnel Attachment Intensely Bright Performance: The Aputure F10 Fresnel paired with the LS 600d Pro delivers 11,440 lux in flood and 29300 lux in spot, rivaling Studio 2K Tungsten lights Dual-Optic Design for Maximum Output: Aputure F10 Fresnel utilizes a two-stage optical system with a rear aspherical element to increase light output by up to 340% in flood mode Precise Focusing with Seamless Adjustment: Aputure F10 Fresnel's helicoid focus design allows for precise 15 to 45 degree beam angle adjustments with a simple twist of the lens ring Durable and Compact Build: The Aputure F10 Fresnel features a heat-resistant construction and collapsible lens, allowing it to stow away to just 6.8 inches for easy transport