I have been a professional photographer for the last 25 years and I've learned that it's almost always better to get what you are looking for in the shot in the camera and not rely on post processing..

I frequently use various ND filters to stop down light, generally to allow me to use a longer shutter speed. I love motion blurring water, cars lights or more creatively like children with sparklers or running with light straps on their wrists. That's what ND can do for me.

This K&F filter gives me more than a standard ND by adding the softening effect of Black Diffusion. This diffusion adds a beautiful softness, especially to any high brightness areas of the frame.

Lastly, I have 5 different variable ND filters, most from big brands and most suffer from the same X pattern issue that is demonstrated in K&F's product photos. I detected NO X pattern at all with this filter which is FANTASTIC for me! This alone makes this filter stand out.

Easy 5 Stars and easy for me to recommend this filter.

I will update this review if anything changes within 1 year. A 5-star rating indicates the product meets my expectations for its purpose.