K&F’s combination of a black mist and variable ND filter is innovative. I have only tested this filter on one lens—an FE 70-200 f/4 ii. Rolling through variations of the same shot, I saw gradual change; the reduction in glare, noticeable. I have four lenses with 72mm threads, and this filter will get plenty of use. I am very pleased to own it.

I have purchased a number of K&F filters previously, and other K&F products. I have found that its products are of excellent value and quality. I sometimes wonder whether the purported quality of higher priced filters is marketing-driven; whether it’s more about reinforcing our perceptions about the relationship between price and quality, rather than real-world performance improvements.

There are likely superior filters - filters with glass reclaimed from ancient Greek vases. However, this combination filter will serve me swimmingly. I mightn’t even be able to tell the difference.

You’re getting a lot of performance from this filter at a very reasonable price. It’s a precision-built filter with flawless engineering. All K&F filters come with a sturdy, light case, and three cleaning clothes.