This product arrived very quickly. I've used it for a few video shoots and it was awesome. I used it on a 35mm sony lens w/ a6300. I didn't notice any issues or weird coloring... Or anything besides helping me maintain my needed frame rates. Very happy.

Utilisé sur une Canon 50mm f/1.8 STM pour la vidéo. Permet de filmer à pleine ouverture à f/1.8, 1/50s, 100 ISO en plein jour et obtenir de beaux arrières plans flous. Très satisfait de mon achat! Très bon prix!

Feels a very good quality filter

Works well. I like that it has max and min indicators

Was looking for an ND filter to take photos with more shallow depth of field during sunny days. Looking around on Amazon. Seemed like this one was the perfect fit with the perfect price. The filter arrived in perfect condition with great packaging. And as a customer, they have great products that are designed with attention to detail.This is a great ND filter from K&F Concept. Instead of purchasing a bunch of ND filters for various stops this Variable ND filter does it all...no need to change filter. Very professional looking and packaging. I love it. I'll try it for video with my 85mm f1.8 Nikon lens.

Product works well. The only problem is it gives my footage a green tint that I have to remove in post every single time I use it.

Works great, but my the lens cap for my Canon 50mm f1.8 does not even fit on the filter. That means I have to take it of and put it back on if I want to switch between lenses. That is the only problem I had with it.

For the price this is a great nd filter, The only downside is that you get a slight green colour cast but nothing you can’t fix in post production, otherwise great filter.

One of the greatest Variable ND filters for its price range.Of course, If you are looking for Zeiss grade accessories, pricewise it will cost you something 10x times more and when talking on such precise and high grade attachments for your lenses, Variable ND filters are not the options - you should have bunch of fixed ND filters, with finest and highest grade glass and coating.This one does same if not more as similar Variable ND filters for $50-70, Slim design, so if you stack it on top of standard protective UV filter, it doesn't generate vignet.Glass is fine and high grade - no significant distortion for most $700-$1200 lenses, which I think is not bad, comparable to lens distortion values itself. Again, if you are such picky for distortions and using Zeiss Otus or even Milvus Primes for over $3000, then you should afford getting fixed ND filters from same Zeiss :)If you have DSLR, your backpack is almost heavy enough, so instead of carrying bunch of fixed ND filters for regular outdoor shootings (and weather is coming up and more bright sunny days we'll have :) ), Variable ND filters are desirable lens attachments and for most of APS-C and Full Frame cameras with sensors common 24 MP sensors, this one is one of the optimal solution.BTW, after great medium range tripod from K&F Concept, this is another camera accessory I've got and I like both - great manufacturing quality, nite and clean, functions as it should be and excellent Price/Quality ratio....

I use these on my Canon 70d. They seem to be of good quality. I'm glad I got them.