K&F Concept Variable NANO-X Nano-Xcel Series Black Diffusion 1/4 Variable ND2-32 CPL Lens Filter
1. True Color Ultra-Low Reflectivity CPL (Circular Polarizer)
Light Transmission: ~45%
Reflectivity: Ultra-low at 0.1% to 0.2%
Color Accuracy: Removes the yellowish/warm color cast common in standard polarizers
Frame Thickness: Ultra-slim CNC-machined frame to prevent vignetting
2. Variable ND + CPL 2-in-1 Filter
Light Reduction: 2 to 6 stops (ND4 to ND64) or 1 to 5 stops depending on the specific variation
Design: Combines an adjustable neutral density filter and a circular polarizer in one housing
Artifact Control: Self-locking gear frame or auxiliary levers designed to completely eliminate the annoying "X" cross pattern at high densities
3. Black Mist (Diffusion) Filters
Strengths Available: Commonly found in 1/4 and 1/8
Transmittance: Typically 84% to 87% (for the 1/8)
Effect: Softens highlights, reduces skin blemishes, and produces a cinematic blooming effect around light sources
General Core Specs
Glass Material: Japanese AGC Optical Glass
Coatings: 28 layers of Nano-coating (waterproof, oil-proof, scratch-resistant)
Frame: Aerospace-grade Aluminum Alloy