K&F CONCEPT 39mm Variable ND Lens Filter ND2-ND400 (1-9 Stops) Ultra Slim

This variable ND filter makes it easy to control light and maintain the shutter speed and aperture I want, especially for outdoor photography and video. The adjustment ring turns smoothly, and the range from ND2 to ND400 gives me plenty of flexibility in changing conditions. The glass looks clear, and I have been happy with the sharpness and color quality. It fits securely on my 72mm lens and feels well made without being bulky. A practical, reliable filter that delivers excellent value for the price.

Great price, reliable, and high quality glass

This is not a bad filter for the price. I took it out for a trial run doing some waterfall shots this past weekend (you can see the results attached). My overall impressions: - The picture quality was pretty good, but not always tack sharp. - It does suffer from the dreaded black X at the MAX ND setting, but no issues on the lower settings. - It was nice to be able to adjust the ND setting on the fly rather than having to swap out filters. In fact, I frequently found myself adjusting it to the MIN setting to check composition and then moving back towards MAX to take the shot. - The build quality seems good and turning the filter felt smooth and fluid. - No hard stops at MAX or MIN settings, so you have to pay attention there. - The indicator dots don't tell you what ND setting you are on, so you need to keep track. - The filter is larger on the incoming end, so the lens cap from your lens will not fit. - I notice some lens flare with the ND filter when the sun is near the viewing angle that don't show up with just the lens. Since my lens shade does not fit due to the filter end being larger, I had to manually shade the lens to make the flare go away. Overall, pretty decent for a variable ND filter. I probably wouldn't use it for professional-quality pictures, but it works for someone just wanting to try an ND filter and not wanting to have to lug around a whole set of filters on a shoot.

Excellent product I got a chance to use it right away on a small film camera. I’m just waiting to see the results when I developed the film, but I’m sure it’s gonna be fine.

Well, the ND filter simply does its job. It gives me a lot more control over the 16mm f/1.4 lens from Sigma, which is an excellent piece of glass. Since it is a fast, wide angle lens, there can be challenges which are easily dealt with using an ND filter. I did read the comment from a reviewer that mentioned an dark "x mark" across his image. I had to see if I could replicate it with this. I cranked the filter way past what I would have normally set it for, and was able to see the x as well. Neat. It's easily fixed though. Just don't "crank" an ND filter further than is necessary. I have a feeling that most all of them will exhibit the same characteristic, so it's just a matter of operator procedure to see that it doesn't happen. Honestly, I had never noticed it, simply because it was a setting that was never called for, given any of the lighting conditions I was shooting in. I can go to manual settings on my camera, and get a blacked out image, if I push the settings into "deep space", but why would I? Otherwise, the filter shows good edge sharpness, and no detectable distortion, but I'm not terribly picky. It gets rid of what problems I might have had with a high speed, wide angle lens, which is what I bought it for. Nice ND filter, and I'd buy it again.

Great ND filter.

I absolutely love this ND Filter! I have it in three different sizes. It attaches easily to your lens and works great. I love that I get to choose how dark I want it to go. It does give off a slight yellow/greenish tint but I don’t mind it. Definitely a great product for the price!

This K&F Concept Variable ND lens filter is great, I have already got 2 other K&F Concept filters from recent years, which are also very good and i like very mcuh ! It has "True colour" and maitains the sharpness of th!e image The filter has excellent build quality, and it has a solid metal frame. It has a premium feel to it and precise in use. It also seems to have great performance, much better than cheaper other-brand filters. It is easy to attach to the lens, very durable, and i think it is a very good "value for money" filter

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Bien mais le levier empêche la pose du pare-soleil

El uso de repente hace que se vea como telaraña la imagen

Excellent product

Nice