K&F Concept filters are always very high quality. I've never owned a neutral density filter before, so I'm excited to be able to test this one. The packaging itself is very high quality, and the included leather case is very nice and sturdy. The filter can be easily pulled out using the strap. The case flap is magnetic. The small orange handle makes it very easy to adjust the filter. The effect is amazing. It helps you easily adjust the exposure in a wide variety of lighting situations. I mainly use it in lighting situations where I want to photograph with an open aperture and the daylight is too strong. The colors in the image are not negatively affected by the filter. Great filter at a reasonable price. I give it 5 stars.

already have a variable ND filter, but I'm not satisfied with it because the dial is stiff and the results don't meet my expectations. Having already given up on ND filters, I came across a product review for this K+F filter, which impressed me so much that I ordered this filter for my new lens (Tamron 35-150mm f/2.8f). The packaging (high-quality cardboard with a magnetic holder), the gold-decorated insert, and the leather storage case gradually convinced me that this is a high-quality product. The filter arrived dust-free, has visible coatings, and a really easy-to-use dial for dynamically adjusting the filter. The screw thread is flawless, and the initial results are significantly better than my attempts with the more basic filter. I'm satisfied, but I expect this level of performance even at such a high price. I highly recommend it!

Anyone who enjoys photography knows what an ND filter is used for. Since my focus is landscape photography, I can't avoid working with filters like this. I ordered this one from K&F for my full-frame camera. I was simply fed up with always filling my backpack with ND filters of varying strengths. That's when the Nano-X came in handy. I ordered it in 52 mm. I then work with step-up rings so that I can also use it on smaller lenses. To put it straight away: The optical quality and the quality of the images won me over! The workmanship is outstanding and very well done. The lens thread has a very clean cut. The filter is adjustable from ND 3 to ND 1000. The larger steps (f-stops) are marked on the ring and are easy to read. This way you know what you have set. The 52 mm filter weighs 28 g on my kitchen scale. Everything is solid and feels very good. The adjustment works well with slight resistance. That's how it should be. The optical quality is absolutely flawless, and even in difficult lighting conditions, the filter performs top-notch. Even when pixel-peeping, I couldn't detect any chromatic aberration or color gradients toward green, magenta, or anywhere else. Even with backlit foliage or fir trees and dew reflections, the filter's quality is unsurpassed. Finally, an ND filter that does justice to my limited lenses and full-frame sensor. The frame thickness with the thread is only 10 mm. Without the thread, it's 0.75 mm. This means I can also use the filter on wider-angle lenses without vignetting. Thanks to the screwed grip and the knurling on the ring, the filter can be adjusted very precisely. Conclusion: K&F Concept has delivered a top-notch filter. What's the point of investing thousands in lenses if bad filters make the work difficult or lead to poor results? A clear 5 stars from me. I hope this is helpful for your purchasing decision. The price is also put into perspective, as you save yourself at least four ND filters.

I was very reluctant to buy an ND filter for a while until I took the plunge with this one, and it's been a turning point in my image and video capture. The quality is superior and it makes my work much easier.

Works as it should. No cross bars. Love it!

Love this filter! Worth every penny if you’re truly into photography. Helped my 70-200mm so much on bright days.

This definitely worked well for sunny settings so I was able to take long exposure/low shutter speed photos without worrying about them being too bright or a completely white photo. The materials are high quality and I like the packaging it came in. Definitely recommend especially if you’re a beginner photographer like me.

High-quality filter would purchase again

bought a 77mm D Series VND filter for my 70-200mm F2.8 lens back in March 2024. I'm not a professional photographer, so I don't use my camera very often and usually avoid shooting in high-exposure environments. I finally used the filter for the first time at a car show in June 2024 under bright sunlight and noticed some focusing issues. After some research, I found out this is a common problem with the specific lens I use. Since the return window had already passed, I decided to reach out to KF Concept directly. I explained my situation to them, and they were super understanding. They allowed me to return the filter with a restocking fee and even offered me a discount on a recommended replacement filter. I thought that was really nice of them, especially since it was my fault for not testing the filter when I first got it. The Nano-X Series VND filter they suggested works perfectly, and I couldn’t be happier with it. KF Concept’s customer service was fantastic, and they made sure I felt supported throughout the whole process. I’ll definitely keep buying their products. It’s really reassuring to know that their customer service has your back and is just as excited about their products as you are.

Working great on my Sony 18-135mm lens. No issues whatsoever.