What ever filter I'm looking for K&F seems to have it.
Not only do the have it, it is always quality and the value you get for how much you pay is always worth it.
I was looking for a ND filter that had more of a dreamer mist to it. I wanted this filter for my Point and shoot camera and the size is perfect it fits flush to the lens and works great.
I also think the thing looks rugged and awesome. Looks like great on the front of my lenses.
This filter (the 55mm thread) fits perfectly on my Canon RF 28mm pancake lens to keep my set up small, sleek and minimal.
Ive loved it so far no complaints. You get a CPL, VND, and 1/4 mist all in one.... not much more you can ask for.

Build quality is good, the rings turn smoothly. The variable ND and CPL filters work well, enough to bring my shutter speed down and capture motion in my images without too much brightness.

The black diffusion filter effect is not that present so if you want softer images you should probably get a 1/2 filter.

Also, keep in mind this filter does not fit the same size lens cap or additional filters. For example, I bought the 43mm filter, but the thread is actually 46mm, so my original lens cap won’t fit. Just double-check the product specifications before buying anything else for your filter.

Overall, it’s a good product. I don’t think it’s worth $45, but I don’t regret buying it either. At this price, value for money is just 'okay'.

One of the most versatile filters for videography. With its ND filter, I can keep my shutter speed the same for video work, along with the 1/4 Black Diffusion filter, creating beautiful, softened highlights. The CPL filter also helps with reducing glare, but to my eyes, I rarely even check for glare. It can be used for photography as well.

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!

Well-built, nicely designed 3-in-1 filter that combines different filters into one unit. The 1/4 mist filter is a bit on the softer side so you'll notice more effect when shooting white or brightly lit subjects. Can work at night to soften up bright lights. The effect is subtle.

However, where this multi-filter shines is the variable ND and circular polarizer filters. Having both filter effects on the same filter is surely convenient. The knob that sticks out is used for the variable ND portion of the filter which can go from 1-5 stops, pretty much all i'd need in most situations. There is no funny X pattern that occurs when using it either. Which is pretty amazing as you'd think that using it with the circular polarizer portion of the filter that artifacts would occur but nope. Many kudos for that. You can loosen the little knob and make your exposure adjustment then tighten it back up to lock it in.

The circular polarizer is towards the camera end of the filter and can be rotated around like a regular polarizer filter. Helps to have your ND knob tightened so you don't adjust the ND filter by accident.

The filter will change the color temperature on your images for sure. It tends to warm things up a bit and you may need to do some extra post image work afterwards.

Glass is high quality. Lens metal is high quality as well. The case for mine (55mm version) seems rather large for the filter. It would have been nice to have some sort of padding or foam to keep it from bouncing around. I'll have to fashion something myself...

Comes with 3 microfiber cleaning cloths as a bonus but no instructions for the filter other than essentially a K&F business card.

I'd give this actually 3.5-4 stars and would recommend this for anybody who needs a convenient 3-in-1 filter of this type. Just wish the case was a little better thought out.

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.

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

Muy filtro, cumplió lo esperado

As a K&F user with several of their filters already in my bag, the quality of this 77mm Mist Filter is exactly what I have come to expect: the build quality is top-tier, and the threading is smooth. If you are familiar with K&F, the premium feel is consistent here.

My Current Challenge (and why I still rate it 5 stars)

I am currently struggling to dial in the correct use for this specific filter on my longer telephoto glass (the Sony 70-200mm and 100-400mm).

The effect I am getting is softer/blurrier than the subtle diffusion I was aiming for. I have done some research and attempted different techniques, but I haven't been able to achieve a result I'm happy with yet.

However, I firmly believe this is a photographer issue, not a product issue. Specialty filters like these, particularly when paired with high-resolution telephoto lenses, can have a steep learning curve. The filter itself is constructed perfectly, and I have high confidence in the K&F optics. I'm rating it 5 stars based purely on the excellent physical product quality and value.

I will keep practicing, perhaps starting with a shorter prime lens to better understand the effect, and may update this review later. If you know how to use mist filters, this is a beautiful piece of glass. If you're a beginner like me, be ready to spend some time learning how to properly incorporate it into your workflow.

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.