Overview
The Nanlite FL-20G Fresnel Lens is a professional beam-shaping modifier designed to convert compatible Nanlite COB LED fixtures into a controllable Fresnel-style lighting source with adjustable focus and intensity.
Using a precision glass Fresnel lens and adjustable barrel housing, the FL-20G allows users to modify beam spread from a tight 10° spot to a wider 45° flood, giving cinematographers and lighting technicians precise control over light direction, intensity, and fall-off.
When used in spot mode, the FL-20G significantly increases light output by concentrating the beam into a narrow, focused projection, making it ideal for key lighting, long-throw setups, and high-intensity cinematic lighting environments.
The unit includes metal barndoors, allowing additional control over spill and beam shaping. This enables fine adjustments to cut light, shape edges, and prevent unwanted spill onto backgrounds or set elements.
Built with a Bowens S-mount interface, the FL-20G integrates directly with a wide range of Nanlite fixtures including the FC-series, FS-series, and Forza-series LED lights. The quick-change mount system allows fast installation and removal during production.
The FL-20G is designed for professional film, television, and studio environments where precise beam control, high output efficiency, and optical quality are required.
Key Features
• Glass Fresnel lens with adjustable beam control
• Beam angle range: 10° spot to 45° flood
• Increases light intensity by concentrating output in spot mode
• Includes metal barndoors for spill and edge control
• Bowens S-mount compatibility for wide fixture support
• Quick-change mounting system for fast on-set use
• Designed for high-output COB LED fixtures
• Ideal for cinematic key lighting and long-throw applications
• Durable construction for professional production environments
Specifications
• Product Type: Fresnel beam-shaping lens
• Brand: Nanlite
• Model: FL-20G
• Beam Angle Range: 10° – 45° adjustable
• Optical Element: Glass Fresnel lens
• Mount Type: Bowens S-type mount
• Included Accessories: Metal barndoors, padded carry case
• Construction: Metal housing with glass optics
• Function: Beam focusing, intensity increase, spill control
• Application: Film, photography, broadcast, studio lighting
What’s in the Box
• 1 × Nanlite FL-20G Fresnel Lens
• 1 × Metal Barndoors Set
• 1 × Padded Carry Case
• 1 × User Manual
