The Aputure F14 Fresnel is an electronic modifier ideal for professional filmmakers and lighting professionals who need the unique look of a large diameter Fresnel and the ability to quickly and remotely control the beam angle. This modifier uses an A-Mount bracket and built-in motors to continuously adjust the Fresnel beam angle from 18° to 40°, making it suitable for professional film set workflows where precise control is required. And with Sidus Link and DMX compatibility, you can adjust the Fresnel's dispersion from anywhere on set.