Overview
The Nanlite Octagonal Softbox 40cm for FM-Mount is a compact professional light modifier designed for Nanlite FM-mount LED fixtures including the Forza, FC, and FS series. It provides soft, controlled illumination in a highly portable form factor, making it ideal for filmmakers, photographers, and content creators working in tight studio or location environments.
With its 40cm octagonal design, this softbox produces natural-looking, wraparound light with soft shadows and pleasing catchlights, making it especially effective for portrait photography, interviews, product work, and small-scale studio setups.
The internal high-reflectivity silver lining maximises output while the included front diffusers soften and balance the light quality, allowing users to switch between slightly punchier or more diffused lighting depending on the scene requirements.
A key feature of this softbox is its quick-open spring rod system, which allows for fast setup and breakdown without complex assembly. This makes it highly efficient for fast-paced production workflows, run-and-gun filming, and mobile content creation.
The included fabric eggcrate grid provides additional light control by reducing spill and tightening beam direction, giving users greater precision when shaping light on set.
Despite its compact size, the softbox maintains professional-grade light quality and is fully compatible with Nanlite’s FM-mount ecosystem, making it a versatile modifier for both studio and portable lighting kits.
Key Features
• 40cm octagonal softbox for FM-mount LED fixtures
• Produces soft, wraparound cinematic lighting
• Quick-open spring rod design for fast setup
• Includes dual diffusion layers for flexible light control
• High-reflectivity silver interior for efficient output
• Fabric eggcrate grid included for spill control
• Compact and lightweight for mobile production use
• Ideal for portraits, interviews, and product photography
• Compatible with Forza, FC, and FS FM-mount lights
• Designed for studio and location workflows
Specifications
• Product Type: Octagonal softbox
• Brand: Nanlite
• Model: SB-FMM-O-40
• Size: 40cm diameter
• Mount Type: FM-mount
• Construction: Quick-open spring rod system
• Interior: High-reflective silver lining
• Diffusion: Dual front diffusers included
• Grid: Fabric eggcrate included
• Compatibility: Nanlite FM-mount fixtures (Forza / FC / FS series)
• Application: Film, photography, broadcast, studio lighting
• Portability: Foldable with carry case included
What’s in the Box
• 1 × Nanlite 40cm Octagonal Softbox (FM-Mount)
• 1 × Fabric Eggcrate Grid
• 1 × Standard Front Diffuser
• 1 × Lite Front Diffuser
• 1 × FM-Mount Speed Ring Assembly
• 1 × Carry Bag
