I've always enjoyed K&F Concept products for their nice balance point between quality and price and this filter is very much in line with my expectations from them.

While using filters like this has fallen out of favor because everyone will "just fix it in post" I still enjoy adding something like this to a lens and going out to be creative. I did my testing on a Nikon 85mm f/1.2, mounted on a Nikon Z9 over the course of a few days and I was very happy with the results.

First, the filter will add a softer feel to all your images, no matter the subject. There are many examples of this and I've included a landscape one in my review. This softness is sometimes a nice creative touch when you're using a clinically sharp lens especially in portrait photography. The other effect is a warming effect that is natural and not too overt. Also great for portraits and landscape in my opinion.

Construction is excellent, as expected from K&F, with a good tolerance ring that screws into the end of the lens without binding or sticking. The filter itself is light weight and easy to handle.

The price at the time of writing this review was reasonable and I felt like it delivered a good value for the price.

If you're wanting a little bit of creative class for you images and want to get away from the clinically sharp looks while not spending a lot on a filter, this should be an option to consider. Keeping it in my kit for my 82mm primes. Good job K&F!