imazing service .

I have this filer mounted on my Sony 24-70 2.8. The rings are made of metal and feel very sturdy in your hand.

I love being able to take photos mid-day and eliminate the harsh sun. It brings out the colors of the landscape and sky.

The filter is very clear and does not leave any of the artifacts that you sometimes get when using Circular Polarizing filters.

The included case is a nice bonus.

I have been using K&F filters for some years now and their quality has been consistently improving. This Nano X Pro ND with circular polarizing lens filter is the best example of what a quality filter should look like. The filter ring turns smoothly and the ND steps are seamless. I have not noticed any flaws in the glass such as the X pattern at the end of the range or dark blotches in a scene. ND2-32 is the perfect range from transitioning from indoor to outdoor without having to remove the filter or cranking the ISO too high.

The circular polarizer is also a great feature of this filter. You can cut down glare and reflections from shiny surfaces with ease or the need to stack filters. Polarizers also give you better contrast in haze and I’ve noticed improved color saturation overall while using the filter. This is an especially great feature when you shoot cars, water sports, landscapes, and cityscapes.

This is one of the most complete and easy to use ND filters that I have tried.

This is a great little filter combining both an ND and A CPL filter, they seem to work well together and I'm getting no x ing or other major colour shifts and for my line of work long exposure car photography this is ideal as I can use the ND to get some nice soft clouds with a longer exposure and get rid of all the cars reflections with the CPL, ideal for the genre in my humble opinion, the filter itself is great quality and feels very solid indeed, very happy with it.

Everything about this KF filter projects quality and precision including the packaging. The filter comes in a sturdy reusable box featuring a slide in/out drawer with a cloth tab handle. Pulling on the cloth handle reveals a tan and thick leather case with a magnetic closure. But there’s more. On the side of the leather case is another cloth tab and when it’s pulled it gently slides the filter out from inside the wallet so no fingers are needed.

Lifting up the filter, the first thing I noticed was the weight. The 77mm size I’m using weighs 4.4 ounces. The trade-off though is precise smooth, fluid-like control. Two gold anodized handles are conveniently located opposite each other and rotating them can adjust both the ND filter and/or the polarizer filter. It takes a little time to learn to use it since it's a dual function setup. Once the filter is screwed onto the lens, the inner dial which adjusts the polarizer can turn a full 360 degrees just as a typical polarizer. The outer ring can rotate about 40 degrees and adjusts the ND filter from 2 to 32 stops.

It's important to adjust the polarizer so as not to produce unnatural dark and light areas in your sky, unless that's the effect you want. (See photos) Of course you can also dial in no polarizing effect at all. The filter turns smoothly and precisely and I appreciate the large handles on the dial so I can concentrate on the photo. The knobs do prevent use of sunshades on my lens so sun glare will be an issue at times.

Bottom Line: I really appreciate no being limited to selected ND ranges but I can dial in any amount of light control from ND 2 to 32, plus polarization. The storage case makes for easy retrieval in your camera bag. One interesting note is that there are directions included for turning the shipping box into a picture frame. I purchased the 77 mm filter and I'll need to purchase an additional 80mm lens cap if I want to protect the front. High quality filter combo that provides convenience and a great latitude of light control. Photos provided are to demonstrate filter effects.

This is a combined 5-stop ND filter and a circular polarizer. The optics quality is really good, indicated by the glass itself. The packaging is awesome. The filter comes in a pouch that looks like leather. The outer packaging is also really good.

The filter fits well with the camera lens. I got the 72 mm filter. The lens cap, however, does not fit. The outer thread size of the filter is larger than 72 mm, and I think it is 82 mm. Unfortunately, there is no way for me to check this. Overall, picture quality and usability are good. However, I still think a better alternative for lower price can be found.

Excelente producto, excelente calidad de construcción.

K&F filters are usually unbeatable in terms of value for money, and this filter is no different. I use it on a Sony 18-105 f/4 and it’s never let me down.

Los filtros K&F suelen ser inmejorables en cuanto a relación calidad-precio y este filtro no es la excepción. Lo uso en una Sony 18-105 f/4 y nunca me decepciona.

I already have a few filters at home, including the K&F Concept Nano-X ND Filter 77mm Variable Grey Filter ND2-32 for 75 euros, which I use on my wide angle, e.g. in bright sunshine (for open glare shots) and for long exposures, and it's really good.

Now I was able to test the variable ND filter from K&F's PRO series, a filter for just under 280 euros. Of course, if you are already working with filters, you should also use high-quality glass on a high-quality lens, but a filter for just under 280 euros is not a cardboard stick and this investment should be well considered. What I can definitely say is that the filter is at the top not only in terms of price level but also in terms of performance and workmanship.

It starts with the presentation (packaging) of this filter, cleanly finished bag with magnetic lid, suede appliqués, soft and lint-free lined interior, a sideways strap with which the filter is moved upwards by pull.
The filter itself is extremely well made and can also be operated with the two brass noses.
It has a very pleasant resistance when adjusted, not too heavy and not too light.
The glass shows no flaws and the threads are also cut absolutely cleanly.
As for image quality/performance, I can only say: TOP!
There are no color errors/color tint or anything else negative here. I can therefore also work with my lens with an open aperture in bright sunshine and, if I like, take long exposures with the help of the filter with a slightly closed aperture.
As I said, image quality is as good as if I had no filter on my lens at all and that's the way it must be.
The pictures I uploaded (undemanding test shots) were taken with an open aperture and against the sun.

My conclusion about this filter:
Very high-quality processing/error-free picture/excellent feel. Price very high
It is now up to everyone to decide for themselves whether such an investment is an option.