K&F Concept 40.5mm ND4-ND64 Variable ND and Circular Polarizing Filter

K&F Concept 40.5mm ND4-ND64 (2-6 Stop) Variable ND and Circular Polarizing Filter

• High-Quality Optical Glass: Constructed from premium Japanese optical glass, the lens features 28 layers of nano-coating on both sides, providing waterproof, oil-proof, scratch-resistant, and anti-fog properties. The lens is ground and polished on both sides to ensure ultra-high definition without compromising image sharpness.
• Variable ND Filter with Self-Locking Frame: The filter offers a variable neutral density range from ND4 to ND64 (2 to 6 stops) with infinite rotation between these stops. The self-locking frame allows precise light reduction adjustment and positioning while preventing black cross effects. It includes a push rod for easy gear size adjustment, beneficial for video shooters to automatically control light reduction with auxiliary tools.
• Ergonomic Frame Design: The frame surface features a CNC trapezoidal pattern to increase friction over a large area, facilitating smooth rotation and easy installation or removal of the filter and accessories in any environment.
• Anti-Reflection and Light Control: The frame surface is treated with oxidation sandblasting to minimize stray light entry and reduce reflections effectively.
• Convenient Storage: Comes with a specially designed storage bag featuring a side pull structure inspired by square storage bag designs, making it easy to carry and access during outdoor shooting sessions.