have an ND 400 that I use for waterfalls etc but I don't always want to block that much light so I looked for something a bit faster maybe an ND16. I've had variable filters in the past but have never been happy with the dreaded Xs the screen when you rotate it or an uneven color cast across the screen. I saw the K&F ad that said you didn't have any of these issues so thought I'd give it a try and they are great, very even light reduction across the frame and no Xs.I have the 77mm filter he is really well made, there are stops on rotation so it's easy to see where the limits are, the frame itself is slightly larger than the 77mm so no chance of vignetting in the corners, the slight downside to this is I can doesn't seem to attach the filter with my hood, but that's no big deal. We recommend.

Works great if you're starting out with long exposure photography, but has a bit of vignetting and color cast

Bought for a recent trip to Rome. Never came off the lens. excellent build quality and performance. works silky smooth, love it!

The filter comes in a very elegant packaging with a magnetic closure and also has a small plastic box for transport. The filter can be easily screwed on and off the lens , estimated at the maximum setting 3-4 full f-stops. You can see the effect best in backlight or strong contrasts in the subject, I'm looking forward to testing the filter in the midday sun in summer.

bought the filters to add to my collection. I have now found the right ones. They were delivered very quickly and were delivered in a very elegant packaging with a magnetic closure. The filter itself was packed in a high-quality plastic case. With the help of adapter rings, the filter was quickly attached and did a great job. Easy to use and great workmanship. I can recommend it to anyone looking for a filter.

I've been using the system for a year now: it has no unexpected signs of wear, the filter glass is easy to clean and everything snaps and sits and fits. I am thrilled about this quality at this price！

bravo

I tried it and wasn't disappointed, easy to use but was too big to carry around for my type of photography unless you use only one lens, but it's too much headache when you keep switching lenses.

So i returned it and went with the magnetic filter from same brand which is perfect for me.

All good

I bought this filter set for landscape photography.

Before that, I had been traveling with a screw set from another company. I was then able to screw that onto exactly 1 lens. (I got it for a 24-105).

Experience has shown that screw filters can only be used in part (in my opinion).
If you use an ND 8x filter, you can safely screw it onto the lens and work with it. However, as soon as it gets higher, the camera is overwhelmed. Setting a focus manually, for example, is an impossibility, with a permanently installed 1000x filter.

This set allows you to set up the camera in peace. To compose the picture, to set a focus. Adjust the polarizing filter. When everything is done so far, you can relax and add 64x or 1000x and take care of the exposure.

The whole set is incredibly easy to use. Each filter is placed in a frame, which in turn has special handles.

The set comes in a handy bag.

I don't really want to talk about space requirements. The screw set is definitely more compact, but handling is simply more important to me at this point.
This kit allows me to mount the filters without leaving grease finger marks on the filter. That's worth more to me at this point.

What I particularly like about this concept is the fact that you can now buy graduated filters and the like at a later date and adapt the set as you like it.