K&F Concept52mm Variable ND2-ND400 ND Lens Filter (1-9 Stops) for Camera Lens, Adjustable Neutral Density Filter with Microfiber Cleaning Cloth (B-Series)

Tis a nice ND filter for those times you want to have a wider aperture in bright conditions and don't want to crank the shutter speed up. Works well, easy to mount and unmount. Did not cause vignetting on my lenses but did not try on anything super wide either. Not super thin so might cause some vignetting in certain circumstances. Seems like a good value.

This filter is REALLY good for it's price. It's sharp, increases contrast in your images, and has no easily discernible color cast. It seem well built with no loose parts. I also have not noticed any cross polarization effects yet which is generally a problem with all VND filters. In the past a filter like this would cost you hundreds of dollars yet K&F have figured out how to bring a quality product to market that is affordable by most every and allowing us explore new photographic techniques at an affordable price. I had my reservations about these for a very long time until my job bought one for production use. it blew me away at how good it was and in turn finally convinced me to buy one. i do not regret my purchase at all. you can also couple these with K&F brass step rings, which are also very high quality, to fit this to all of your lenses instead purchasing multiple filters to fit all of your lenses. This is a must buy for any photographer.

The filter works fine but you CANNOT use your lens hood when the filter is on the lens. I've got another filter that allows the hood to be mounted but this one does not.

This is the coolest filter I have ever purchased for a camera. Okay, so it's not magic, but to be honest it might as well be. I have no clue how it works but it is the smoothest transition from each level. It goes from barely there to extremely dark in a smooth transition just by slowly turning the dial. Way cool, practical and perfect! Image quality through it is great. Don't hesitate to buy this. Also, fyi, you can buy a OEM cap to fit it. The listing has the lens cap size in the description so I ordered a lumix cap in that size and it fits perfectly. You will want one so you can leave the filter on without issue.Also, a word of CAUTION!! Don't put this on with an auto close cap!!! It jacked my camera up and I was afraid it was gonna be wrecked. Took some finagling but I finally got the filter off and restarted camera and it fixed the error. But it was scary!! So be sure to have the auto cap removed before using! These filters do not work with an auto cap!

I bought this ND filter as it was very affordable and high quality. Obviously, it does not give the perfect transparent color, but it is good enough if you're just beginning videography. I think it's a perfect filter if you're just starting out and want to pick up a simple, good quality product. I'm happy with my purchase.

I bought this filter for use in my Solar Imaging setup. It is precisely what I needed. With it in my imaging train, I can control the sunlight transmission level to suit the level required by the SHG - the spectroheliograph. Very pleased with its performance. I plan on posting an image or two when I have them.

Dollar for dollar this is one of the best lense filters I own. As a professional photographer, I have about 20 filters that I use daily with my 85mm. Sigma lens. This is my go-to filter. Very easy to use, images come in sharp with no disortion, and it saves me a lot of editing in post. More often than not, my images are good straight out of the camera. Highly recomment

This thing started off giving great quality. I think the problem is that it doesn't have a stopping point when turning the ring to pick the stop number. In assuming that after turning a few times the glass somehow becomes misaligned and drops the quality. I've been able to really use it for the first time yesterday and it destroyed many pictures because of the quality. When it works well I will say it's a 5 star. But I have to rotate the ring multiple times and take a picture after each rotation before I find a good enough quality to keep. It takes away from the experience so I just took it off and fixed the brightness of my images in photoshop. So I'm giving a 3 start simply because if you find the sweet spot then you have hit gold for the price but I do wish I picked a better one. I must add that this is my first time using a ND filter so it could be something I'm doing wrong but it seems like it should be straight forward to use.

Filtro muy uniforme. Incluso al máximo de opacidad el viñeteado es casi imperceptible. Las fotos que he subido son todas tomadas a ND400 con un lente f1.7 abierto al máximo.

Só uso filtros dessa marca, e o preço no Brasil está muito bom

The quality is great and it's exactly what I need for my zv-e10 kit lens.

Me llego bien sellado, la caja en execelentes condiciones más un paño de la marca, lo estoy usando en una Sony alpha 6600 en objetivo sigma 16mm, funciona muy bien y los materiales se dientes bastante resistentes.

It has got just about all your required settings. Ultimate & Optimum useful filter.