Aputure Fresnel 2X AttachmentThe original Aputure Fresnel was an integral part of film making lighting kits. The Aputure Fresnel 2X Attachment outputs twice as much light as the original Fresnel. The new design features dual optical elements, a larger 6 inch front Fresnel lens, improved ventilation, and minimized light leaks, making this the ultimate Bowens Mount Fresnel. Dual Lens Optical Design The Fresnel 2X has a dual lens design. The rear lens focuses and magnifies the beam