This was one of the best purchases I've made recently and I have no hesitation in recommending it, especially to travel photographers who advocate taking as little camera gear as possible. Filters are one of the accessory sets I always have with me, as they are essential for my landscape photography.

My first impression of the filters was the beautiful packaging they arrive in. They come in a hard cardboard box, with the filter itself housed in a hard plastic sleeve inside the box. The frames of all the filters, with the exception of the circular polarizing filter, are made of aluminum alloy. Although very slim in design, they certainly feel rigid without really bending, even when forced.

The glass itself on all filters is coated optical glass (to reduce reflections), which is waterproof and scratch resistant. Overall, all of the filters performed very well.

With the CPL, you can see a boost in the blue in the sky. There is a very slight vignette in the upper left corner, but it is so slight that it can be easily removed in post-production, as you can already see in my images.

The ND filter worked very well, with no color casts or vignetting. There is no unwanted X effect.

In summary, the image quality is excellent and the added benefit of using only one filter and adjusting the gradient without having to stack filters is really useful. Overall, the see, feel and last these filters are top notch, but are also affordable.

Great piece for landscape photography. Variable ND without "shadow cross", clean in both areas. Polarizing filter goes great, and if it does get too bright you'll love the ND, stepless control. Used on FZ200.

This is a high quality circular polarizer variable neutral density combination filter from K&F. I used the 77mm to cover most of my lenses using step up rings. The smallest filter size is 52mm as shown in the photo. The filter is excellent for everything it does and it is inexpensive. It's much more convenient than separate filters; it is quicker to use and requires less carrying in your pocket. This also works for some wide angles, which would be a problem when stacking multiple filters. The build quality of the filter is excellent. A leather storage case is included. From 4 stops onwards there is a slight vignetting and color shift, which increases with increasing ND filtering. This is expected and can be fixed in post-processing if desired. Image sharpness and sharpness are not affected. This filter outperforms other CPL+ND filters I have used.

This is a premium combination filter from K&F that combines an ND filter and a circular polarizer. The build quality is excellent. The machining and anodizing of the buttons is very good. The selection doesn't move, but overall it's pretty easy to move. The knurling on the mounting ring ensures that it adjusts easily enough when adjusting the ND/CPL function to prevent it from twisting off. However, using this filter is a bit difficult and not as fast as using the standard filters separately. When you move one ring, it usually moves another ring. So you have to hold a ring still with one finger once you make a selection and then make the other selection with the other finger. This makes it very difficult to use on the go or while holding a fairly heavy lens and camera combination. It is best suited for landscapes/tripods rather than scenes where the light changes drastically. It can be set for a scene, but changing it requires some work. Sharpness doesn't seem to be affected too much when the filter is activated. However, there is quite a bit of red/purple color cast. In very bright lighting conditions there may be some purple/red flair. So make sure you are aware of this. This filter works like a combination filter, but has more limitations than using two separate filters. There are still situations where both are needed, it works well. I wish they would stick with the plastic case instead of the leather case they used for this filter. It's bulky and just doesn't stack as well as the plastic cases. The compromises make it a casual use filter for me, but overall in situations where it is used it has worked well.

Despite a slight degradation in image sharpness, particularly at longer focal lengths, and weaker CPL performance than a standalone solution, for the relatively lower price the filter is well built, easy to rotate and performs well when it comes to Combine both ND and CPL filters without having to stack them.

I was hesitant since I've never used filters before, but this one is great. I love the fact that I can make it darker or lighter using just the rotator.

The filter fits my lens well and screws in easily. The lens cap fit on the filter, but the flange on the filter was too large for the lens hood to be used with. Both the polarizing filter and the ND filter rotated smoothly. The polarization filter reduced glare when rotating. The ND filter allowed me to slow down the shutter speed and still get the same exposure. This would be great for giving waterfalls that thin effect, although there aren't many waterfalls here in December. I noticed a purple tint at the darker end of the ND filter, so apparently it's possible to go too far with neutral density filtering. Other than that, I'm happy with the filter and look forward to using it more in the spring.

The quality of the construction shows as you hold it in your hand, you can see they were made with love and dedication, there is nothing vignetted about it, even in a 20mm bulb and there are no signs of X effect. The only drawback I made is that in this case my device came without a cleaning cloth. I know it's silly, but since it comes in a box and a premium cover that is less than that among other filters from the brand if they bring it, on the other hand, for convenience, there should be an option to close the polarizer ring lock, because if you want to move the ND you have to rotate it very carefully or you end up moving the polarizer too, I think it should have a cover so you can always have it on the lens and not worry about possible shocks or make scratches, even if it seems to me that it is a 2-in-1 filter of very good quality, I would buy it again.

A truly excellent product, practical and at the same time very delicate

beautiful pictures, super practical, especially if you work a lot with cars