K&F Concept Nano-X Series ND4-64 Variable ND Lens Filter & CPL Polarizer 2-in-1 Filter 37/40.5/43/49/52/55/58/62/67/72/77/82mm

K&F Concept Nano-X Series ND4-64 ND Lens Filter Variable & CPL Polarizers Filter 2-in-1 With 28 Layer Coatings 67mm 77mm 82mm

About this item:

* The lens is made of top Japanese optical glass, and the lens is coated with 28 layers of nano-coating on both sides, which is waterproof, oil-proof, scratch-proof, and anti-fog. The lens adopts grinding and polishing technology on both sides to ensure ultra-high-definition, and the sharpness of the image is not damaged.

* The frame adopts self-locking technology, which is infinitely rotated by 2-6 steps, which is convenient for light reduction and positioning, and at the same time avoids the phenomenon of black crosses. The frame is equipped with a push rod, which is convenient for customers to adjust the gear size. For users who shoot video, it is helpful to automatically adjust the light reduction gear through auxiliary tools.

* The surface of the frame is designed with CNC trapezoidal pattern to ensure that consumers increase friction in a large area when rotating, and install/remove lenses and other accessories anytime and anywhere.

* The surface is treated with oxidation sandblasting, which can effectively avoid the entry of stray light to the greatest extent, and is used to reduce reflection.

* The product is equipped with a storage bag, which is convenient for customers to store when going out for shooting. The side pull structure follows the design style of the square storage bag, which is easy to take out.

Q1: What is this 2-in-1 filter and what does it do?

A: This filter combines Variable ND4-64 and CPL in one, offering two key functions:

ND4-64: 2-6 stops adjustable light reduction to prevent overexposure and create cinematic motion blur.

CPL: Eliminates reflections on water/glass surfaces, restores true colors, and enhances image saturation.

Q2: Why does it avoid the black cross issue of traditional VND filters?

A: Features an upgraded optical structure that eliminates black cross and color cast, ensuring clear, undistorted images at all ND stops, ideal for both photo and video shooting.

Q3: How to adjust the ND and CPL effects?

A: Easy to operate for beginners:

Rotate the orange push rod to adjust the ND stop (ND4 to ND64, 2-6 stops clearly marked).

Rotate the filter frame to adjust the CPL polarization effect, no extra tools needed.

Q4: How is the coating quality? Will it affect image quality?

A: With 28-layer nano-coating and 0.2% ultra-low reflectivity, it delivers high light transmission, prevents glare and ghosting, and is water/oil repellent. No color cast or sharpness loss for lossless image quality.

Q5: What are the advantages over buying separate ND and CPL filters?

A: The 2-in-1 design eliminates the need to stack two filters, avoiding vignetting and image quality loss, while saving cost and space. You get both functions with one installation, making shooting more efficient.

Q6: How to choose the right size?

A: Check the diameter marked with the "Φ" symbol on your lens (e.g., Φ77mm means you need a 77mm filter). Available in sizes from 37mm to 82mm, compatible with most DSLR and mirrorless lenses.