【Self-Lock Frame, No 'X’ cross】Say goodbye to the "X" cross on images, K&F Concept utilizes cutting-edge technology to perfectly avoid the common "X" issue of variable nd filter on wide-angle and telephoto lenses.
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I recently had the pleasure of using the K&F Concept 49mm Variable ND Lens Filter, and I must say it’s been a game-changer for my photography! The filter is made with imported AGC glass, which ensures excellent color balance without any cast or impact on image clarity and sharpness. This attention to detail really shines through in the final product.

One of the standout features of this filter is its self-lock frame, which eliminates the common ‘X’ cross issue that can occur with variable ND filters, especially on wide-angle and telephoto lenses. I’ve noticed a significant improvement in the quality of my images since using this filter.

The K&F Concept team has also developed 28 layers of nanometer coatings for this filter, making it waterproof, scratch-resistant, and anti-glaring. These coatings protect my valued lens and help produce high-quality photos that are truly stunning.

Another feature I appreciate is the ultra-slim frame design, which helps avoid vignetting even with wide-angle lenses. The CNC-non-slip design also makes it easy to install and remove the filter. This might seem like a small detail, but it can really save time and frustration during a photo shoot.

It’s worth noting that this filter kit is compatible with all 49mm lenses, but be sure to verify your camera’s lens thread size before ordering. Also, the lens cap/hood size should be 52mm for the 49mm nd filter.

One last thing I’ve received both new and old packages randomly, so don’t worry if you get an older model. Regardless of the package, the quality and performance of this filter are top-notch.

  • Imported AGC GlassVariable nd filter made by importing AGC glass, first-class filter material balancing the color batter, with no color cast and no effect for the image clarity and sharpness.
  • Self-Lock Frame, No ‘X crossSay goodbye to the “X” cross on images, K&F Concept utilizes cutting-edge technology to perfectly avoid the common “X” issue of variable nd filter on wide-angle and telephoto lenses.
  • NANOTECK&F Concept optical engineers developed multi-layer nanometer coatings (total of 28), waterproof, scratch-resistant, and anti-glaring, protecting the valued lens and presenting high-quality photos.
  • Ultra Slim Frame Avoid Vignetting7.4mm Ultra-slim frame design utmost avoid the wide-angle vignetting (support 28mm focal length no vignetting). CNC-non-slip design helps install and remove the filter easily.
  • NOTEThis filter kit is compatible with all 49mm lenses. Please verify your camera’s lens thread size before ordering. The number is always preceded by a “” (diameter) symbol. For the 49mm nd filter, the lens cap/hood size should be 52mm.
  • New and old packages are sent randomly

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