K&F Concept Matte Box Square ND Filter / Black Mist 4"x5.65" Cinema Neutral Density Filter

Key Features

• Industry Standard 4"x5.65" Profile: Built with the universal cinema 4x5.65 inches (100x143.5mm) specification, fitting flawlessly into Tilta, SmallRig, and ARRI professional matte boxes.
• Precise ND8 3-Stop Light Reduction: Delivers a stable ND8 (0.9) constant optical density, slicing light ingestion by exactly 3 stops to enable wide-open cinematic apertures under bright daylight.
• Ultra-HD German Optical Glass: Forged from select premium German high-transparency optical glass, maintaining razor-sharp 8K/12K resolution tracking without any edge distortion.
• True Zero-Color-Cast Technology: Formed through advanced spectroscopic calibration to secure a completely linear light spectrum, achieving zero color tinting or yellow-green drift.
• 28-Layer Double-Sided Nano Coating: Armed with 28 layers of anti-reflective green film, rendering the surface highly oil-resistant, scratch-resistant, hydrophobic, and anti-static on location.
• Luxury Handcrafted Leather Pouch: Bundled with an elite, handcrafted genuine leather organizer wallet lined with micro-clear velvet to isolate and shelter your delicate optical glass finish.

The K&F Concept ND8 (3 Stops) Square ND Filter (KF01.2448) represents the absolute standard in professional cinematography exposure control, precision-crafted to drop seamlessly into Tilta, SmallRig, and ARRI matte box systems. Part of the elite Nano-Xcel series, this industry-standard 4"x5.65" (100x143.5mm) premium German optical glass sheet provides an exact 3-stop optical reduction (ND0.9) to empower filmmakers to shoot wide-open cinematic depths under blinding outdoor elements. Backed by true-color spectral calibration to secure zero color-cast or yellow-green shift, its 28-layer double-sided multi-coating infrastructure renders the surface highly scratch-resistant, anti-static, and hydrophobic. Accompanied by a luxurious handcrafted micro-velvet genuine leather sleeve, it stands as an uncompromised, high-transmission asset for long-duration commercial television and motion picture tracking.

In the Box

• 1 x K&F Concept Nano-Xcel 4"x5.65" Square Filter 
• 1 x High-End Handcrafted Genuine Leather Protective Pouch
• 1 x Technical Testing Certificate & Cleaning Cloth

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