K&F Concept Black Diffusion 1/4 filter 40.5 mm

The K&F Concept Black Diffusion 1/4 Filter is a high-quality optical filter designed to soften skin, reduce contrast, and create a cinematic glow in your photos and videos. Crafted with Japanese AGC optical glass and a CNC machined aluminum alloy frame, this filter offers durability and superior image quality.

Advantages

This filter diffuses highlights and reduces contrast, giving your images a dreamy, cinematic look. It is ideal for portrait photography and videography, as it softens skin imperfections while maintaining sharpness. The 28 multi-layer coatings ensure excellent light transmittance and anti-reflection, while the hydrophobic coating makes it waterproof and scratch-resistant.

Suitable for

• Portrait photography
• Videography and cinematic effects
• Lenses with 40.5mm filter thread

Key specifications

• Filter Type: Black Diffusion
• Diffusion Strength: 1/4 Stop
• Filter Diameter: 40.5 mm
• Optical Material: Japanese AGC Optical Glass
• Frame Material: CNC Machined Aluminum Alloy
• Coatings: 28 Multi-layer Coatings
• Light Transmittance: Approx. 84%
• Frame Thickness: Ultra-slim 3.3mm
• Thread Type: Double-threaded (front and rear)
• Waterproof: Yes (Hydrophobic coating)
• Scratch Resistant: Yes
• Anti-reflection: Yes
• HD Quality: Yes
• Color Shift: No noticeable color shift
• Included Accessories: Protective storage case

Recommendations

For best results, use this filter on lenses with a 40.5mm filter thread. It is perfect for achieving a soft, cinematic look without post-processing.