The NanLite FL-20G Fresnel Lens is a professional-grade glass Fresnel lens modifier designed for NanLite Forza and FC/FS-Series Bowens-mount lights. Its adjustable rotating barrel lets you dial in beam angles from a tight 10° spot to a wide 45° flood, giving cinematographers and photographers precise, repeatable light shaping on set.
When attached to the Forza 300B II and set to a 10° spot, the FL-20G delivers a stunning 151,000 Lux at 1 meter — dramatically boosting output while keeping light controlled and spill-free. Built from thermally engineered materials, it handles the full heat output of Forza lights without compromise, and swaps in or out in seconds via the tool-free Bowens quarter-turn mount.
Key features
- Precision Beam Control: Rotating barrel adjustment spans 10° (spot) to 45° (flood) for versatile, on-the-fly light shaping with a simple twist.
- Massive Light Output Boost: At 10° spot, increases Forza 300B II output to 151,000 Lux (14,028 fc) at 1 meter for powerful, concentrated illumination.
- Professional Glass Fresnel Lens: Optical-quality glass construction delivers clean, even beam quality with smooth falloff — ideal for film, broadcast, and studio work.
- Included Metal Barndoors: Attached barndoors offer additional spill control and precise flagging of light for tighter compositional control.
- Thermally Engineered Materials: Purpose-built to withstand the full heat output of Forza lights at maximum brightness, ensuring safe long-term use.
- Tool-Free Bowens Quick-Change Mount: One button push and a quarter-turn swaps the FL-20G for any Bowens-compatible modifier, keeping production moving at speed.
Specifications
| Lens Type | Glass Fresnel Lens |
|---|---|
| Beam Angle Range | 10° (spot) to 45° (flood) |
| Max Light Output | 151,000 Lux (14,028 fc) at 1 meter (spot, with Forza 300B II) |
| Mount Type | Bowens Mount |
| Included Accessories | Metal Barndoors, Padded Carry Case |
| Compatibility | Forza 500B II, 500 II, 300B II, 300 II, FC-500B, FC-300B, FS-Series, Forza 500, 300, 300B, 200 |
| Barrel Adjustment | Rotating barrel with intuitive twisting motion |
| Warranty | 2-Year Limited (extendable to 3-Year with registration) |
Frequently asked questions
Which NanLite lights is the FL-20G Fresnel Lens compatible with?
The FL-20G is compatible with the NanLite Forza 500B II, 500 II, 300B II, 300 II, FC-500B, FC-300B, and the FS-Series spotlights, as well as first-generation Forza 500, 300, 300B, and 200 — any model using a Bowens-style mount.
What beam angle range does the NanLite FL-20G offer?
The FL-20G adjusts from a narrow 10° spot to a wide 45° flood via its rotating barrel design, allowing smooth, intuitive beam control with a simple twisting motion.
Does the NanLite FL-20G come with any accessories?
Yes — the FL-20G includes metal barndoors for additional spill control and a padded carry case for safe storage and transport, plus a 2-year limited warranty extendable to 3 years with product registration.
