The glass Fresnel Lens for Forza 300 and 500 from NanLite is a versatile lighting accessory that allows for precise control of light output. With a focus range of 10 to 45 degrees, this lens can transform the wide beam spread of the Forza into a focused spot or a wider flood. It is designed with the Bowens-S-Type mount, making it compatible with a wide range of lighting equipment.