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
Fits nicely and feels well made. However, you cannot put your lens cover on it so always have to remove the filter.
11/12/2018
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
08/10/2018
The filter will help in removing reflections of water or shiny surfaces, plus the ability to help with the exposer times for various picture effects. Screws on the end of your lens like a UV filter and has an easy to turn the metal ring to adjust the amount of neutral density from a little to a lot, so can be left on the lens as protection. the product is well made and should provide years of service.
25/08/2018