This isn't the latest and greatest. Certainly not going to put it up against the new Peter McKinnon ND Filter but for the money I'm quite pleased.
23/07/2019
First variable ND filter purchased (all others I have had have been static) and what a difference it makes!So easy to move around, and not having to carry more than one per lens is a real space-saver in the bag!I've experienced no false colour or the infamous X on any images (although I don't use this all the way closed!)Comparing it to a friends premium ND (I won't mention the brand), I could not see a difference at all in image quality. However, the premium ND was a bit stiffer to move around, so it felt like it would stay exactly where left. The K&F one does feel like it may loosen up over time, although this hasn't happened yet a few months in!
28/03/2019
I like this product for videos. I am a photographer but have been getting request about videos. So I bought this product to help me produce cinematic film
06/01/2019
Great purchase, easy on the wallet and to use. I’m not sure if it’s a drawback or not but you can’t use your lens hood with this filter on your lens. Kinda I guess.
26/10/2018
The filter does not have a stop, it will continue to spin all the way around. Though it does spin freely, taking the camer in and out of a bag/case may change the filter intensity. Otherwise it allows for much lower f stop. I use this while filming outdoor shots.
23/10/2018
08/10/2018