K&F Concept 37MM Multi-functional CPL+Black Mist 1/4 Filter

The K&F CONCEPT 37mm Multi-functional CPL + Black Mist 1/4 Filter combines circular polarization with cinematic diffusion in one ultra-slim filter, reducing glare while softly blooming highlights for a natural, film-like look. Ideal for portraits, video, and wide-angle shooting, it enhances color, smooths skin tones, and maintains excellent image clarity without vignetting.

The K&F CONCEPT 37mm 2-in-1 CPL + Black Mist 1/4 Filter is a versatile creative tool designed for photographers and filmmakers who want professional cinematic results straight out of camera. By combining a Circular Polarizer (CPL) and a Black Diffusion 1/4 filter into a single unit, it eliminates the need for stacking multiple filters while preserving image sharpness and preventing vignetting.

The Black Mist 1/4 diffusion layer subtly softens harsh highlights, reduces contrast, and smooths skin texture, making facial features appear more natural and pleasing. It creates a gentle glow around light sources, perfect for portraits, fashion photography, cinematic video, and night scenes. Meanwhile, the rotatable CPL filter effectively reduces reflections from water, glass, and other non-metallic surfaces while enhancing color saturation and contrast.

Constructed from premium AGC optical glass, the filter features 18 layers of advanced multi-coating to minimize glare, ghosting, and reflections. A durable nano-coating provides resistance against fogging, water, dust, and scratches for reliable performance in outdoor and demanding environments. The ultra-thin, aircraft-grade aluminum frame ensures compatibility with wide-angle lenses without vignetting, while the CNC-machined trapezoidal pattern improves grip for easy installation and smooth adjustment.

Key Features

• 2-in-1 design combining CPL + Black Mist 1/4 diffusion
• Reduces reflections and glare while softening highlights
• Creates a cinematic, film-like atmosphere
• Smooths skin tones and minimizes wrinkles and pores
• Rotatable CPL ring for precise polarization control
• High-quality AGC optical glass
• 18-layer multi-coated anti-reflective surface
• Nano-coating resists water, fog, dust, and scratches
• Ultra-thin aluminum frame prevents vignetting
• CNC trapezoidal frame design for better grip and reduced stray light

• 1 K&F CONCEPT 37mm CPL + Black Mist 1/4 Filter

• Filter Size 37 mm
• Filter Type CPL + Black Mist 1/4 (Diffusion)
• Glass Material AGC Optical Glass
• Coating 18-Layer Multi-Coated + Nano Coating
• Frame Material Aircraft-grade Aluminum
• Frame Design Ultra-thin, CNC-machined, rotatable
• Weather Resistance Waterproof, fog-resistant, scratch-resistant
• Mount Type Screw-in