40.5mm Black Diffusion Mist Effect 1/4 & Variable ND2-32(1-5 Stops) & Circular Polarizing Filter CPL 3 in 1 Lens Filter with 18 Multi-Coatings Nano-Klear Series

A very well constructed and very complete filter since in the same ring you have both the ND filter and the polarizer and a little bit of MIST included.

I'll tell you, the last 2 photos are a clear example of how this polarizer works, if you look at the window you can see perfectly how the reflection produced by the light itself and the glass is eliminated, being able to see almost inside what is there.

And in the video I explain quite well with example how this polarizer works, which for those who don't know photography is like putting on sunglasses yourself and seeing everything better on a very sunny day, that's how ND filters work.

It is threaded and attaches very well, although I have to say that I had a small mishap since I screwed it to a Nisi UV filter and I haven't been able to release them yet so now they both come in a pack together haha.

I really like how it works and it will come in handy for long exposure in the middle of the day and be able to give that silky effect both in water and in clouds, for example, in addition to removing reflections and being able to see the full texture.

These guys from KyF Concept work very well and are not expensive at all. Highly recommended for my Sony 18-105 lens with a diameter of 77mm.

This variable ND filter from K&F comes in a hard box and comes with soft cleaning wipes.
The finish is very clean, all metal, with a rocker lever to vary the grade and block the value by screwing in, a graduation being engraved on the edge of the filter.
At a minimum value, the filter absorbs 1 EV, at the darkest it will be 5 EV.
The system works by cross polarizers so we have an original polarizing effect.
In addition, there is a black-mist filtration that softens very bright areas.

It will be necessary to multiply field tests to definitively conclude on its qualities and effects, but I have already adopted this filter for various uses.

Nice quality diffuser lens, but K&F tends to be good quality at a reasonable price. It fits my Nikon perfectly, works well and looks good. Win Win.

First, it is necessary to rotate the filter to obtain the desired ND value.
Then the screw is locked and rotated to obtain the polarizing effect without changing the ND value.
Note that you must always turn in a clockwise direction otherwise the filter will unscrew.
It is no longer possible to use the sun visor with this filter, it protrudes and the screw prevents it from being put on.
I did not observe colorimetric drift, I am giving you the effect of the polarizing agent, which allows you to remove the reflections and bring the clouds out of the sky again.
This purchase is justified if you need a variable ND in addition to polarization, with a simple circular polarizer you can keep the sun visor.

The K&F Concept 3-in-1 is a filter that combines variable ND (ND2-32), circular polarizer (CPL) and Black Mist 1/4
For those who are not practical: ND stands for neutral density, by rotating the ring you can lower the brightness that enters the lens, simply unscrew the tightening screw slightly and rotate the ring, on which the numbers are written.
CPL: stands for “Circular Polarizing Filter”, a polarized filter, so it removes reflection and reverberation, this should lead to slightly more saturated colors, and for example, by photographing a body of water, you should be able to view a part of that is under water, obviously based on clarity.
Black Mist: on the other hand, it is a filter used for high lights, the classic example of a flame in the dark that results in a reflection diffused all around.

The product looks good, with plastic packaging and there are 3 cleaning cloths.
The filter is made of excellent aluminum, the rotation system for adjusting the ND is fluid and of the right hardness.
I tried the 82mm on a Sony 24-70 GM2 lens, and I noticed a bit of vignetting, unfortunately this is one of the most well-known problems with this type of filter.
The polarization is good and since I already own a 1/4 Black Mist filter from this brand, I can say that the effect is the same.

In conclusion, it is a convenient filter because it contains several filters together, and rather than having 3 overlapping them, 1 is better.
If you need to create this slightly cinematic effect, it is a product to evaluate, it can do that effect on highlights and give more saturated colors, and ND allows you to manage the intensity of the light.
Watch out for vignetting, especially with the filter completely closed.
Pass the tests with 5 stars!

I love this 2-in-1 filter! The mist filter makes the scene look beautiful and the ND keeps the exposure perfect. You can even twist and lock the adjustment knob on the frame. This is a great filter and I 10/10 recommend! Especially if you are filming talent

This K&F VND filter is the do it all filter for you if you are a fan of the black pro-mist diffusion look. Having variable neutral density in combination with circular polarizer and black mist look you could essentially leave this filter on your video camera lens and get so many different looks. The large orange knob allows you to easily turn the VND portion of the filter and the rear ribbed ring allows you to turn the CPL which takes a little effort to turn but prevents accidental adjustments. The VND knob can also be tightened or loosened to adjust the tension of the VND adjustment which can be locked out to prevent accidental adjustment as well.

One problem that I ran into while using this filter was the fact that I am unable to mount this within my matte box as the protruding orange knob of the VND portion sticks out way too much and wont allow me to thread it into my matte box. You also cannot remove the orange knob by untwisting it all the way so I am just unable to use it with my matte box. Also the CPL adjustment is a little hard to adjust because unlike the VND, the CPL portion does not have a dedicated knob for you to grab onto to spin the filter.

With those gripes aside I do think this is a great run and gun filter that tries to do it all. Its perfect for someone that likes that constant black pro-mist look yet need the ability to adjust the ND and CPL. I will be using this for my fun camera as I am unable to mount this in my matte box on my FX3 but this would be perfect for my A7IV run and gun setup.

This filter is great because it has 5 stops and it's super easy to adjust. This can literally take the place of 5 lenses. Keeps you from swapping lenses so much to adjust for lighting. Take this 1 lens outdoors with you and it may be all you need to get the best shots. Built well, works great. The micro fiber cleaning cloths are a great bonus, they are also qulity made.

Beautiful high quality filter. Threads smoothly and feels well made. Adjust butter smooth with the little knob that's attached. The knob does get in the way sometimes but it makes it easy to track what setting your on and also adds a premium feel. The quality of the glass itself is of course crystal clear. I can't speak too much to compare the black mist effect with other filters but this one suits my needs.

The combination of filters here can make a huge difference in the final image depending on what you're shooting. For landscapes, water, cars, and reflective surfaces this filter is a game changer. Much more convenient than layering on a ton of filters as well! Just be warned the knob may not fit with some accessories like a matte box or otherwise. Another great K&F accessory at a fraction of the price of the competition!

Product being reviewed: K&F Concept 72mm Black Diffusion Mist Effect 1/4 & Variable ND2-32(1-5 Stops) & Circular Polarizing Filter CPL-in 1 Lens Filter with 18 Multi-Coatings for Camera Lenses (K-Series)

This polarizing filter by K&F Concept is interesting in that it's adjustable with a slider on the side of the lens to achieve different ND values. On top of that, there is another adjustment ring to fine tune the CPL. Now I'll be the first to admit that this is more advanced than I'm used to; I have a Fujifilm X-T5 and am amateur at best. That being said, it's been fun to mess around with this filter. I've had varying results on my photos; some seem no different than without the filter, and others have weird shadowed areas, I believe due to the CPL. This is a learning curve that I'm still working on. This can impact colors in your photos, so mess around with the filter a lot if you don't know what you're doing.

Some things to note when using this filter:
-No lens cap, hood, or additional filters will fit it.
-Since the adjustment slider sticks out, it's best to remove this filter before storing your camera to avoid damage.
-Takes time to adjust and dial in the right settings for your situation and not for fast shots.

The filter itself seems well made. I have mild concerns about sand or other small dust particles getting in the sliding mechanism, but no issues so far. K&F filters are usually a really good value and I think this one is as well since it does two jobs (ND and CPL). Recommended as long as you understand what you're buying.