This is a serious piece of kit if you are a professional photographer or even if you are fairly new to photography and want to ramp up your skills.
This incredible filter allows you to select from a range of filter options in order to add some darkness to specific parts of an image. For example the sky can look darkened whilst the rest of the picture is bright.
It gives a stunning effect and can really enhance any picture for a professional look. I’ve played around with it over the weekend and it is fantastic. It’s pretty amazing at how much of a difference lighting can make in a photo. Very happy indeed.

Love it very good thanks

I am using this on my XT3 16-80 f4 and it's perfect match for me when I need to record in HLG during bright daylight. It has almost no impact on sharpness (you would need to pixel-peep to absolute details and even then the difference is minuscule, makes no visible difference in 4k video though) and no visible color shift.

I bought these Freewell range of filters as they were one of the first to use a magnet rather then a thread to attach the filter to the lens, and this makes life so much easier when swapping filters

This filter is amazing highly recommended I’m so happy with my results

Easy to swap quality filters. Only downside is the lens cap will take the filter off when you remove it (if you put the cap over a filter on your lens), but other than that, I love the ability to throw filters on and off quickly. I can also use my older screw-on filters on top of these, so I can stack a magnetic CPL, magnetic ND16 and a screw-on ND1000 for a long exposure shot (as an example).
They are very good quality with no more color shift than any other filter on the market.
Also as a tip, I bought the largest filter I needed and bought the freewill step up rings for my other lenses. This way I only needed to buy one set of filters. The step up rings from Freewell have the magnetic base built in.
One last thing, the filters now come with 2 base rings, one with a UV filter and one that is just the open ring (no glass).
When I received the ND filter I could not get it to work right with the open base ring that I attached to my lens. Then I noticed the UV base ring was already attached to the ND filter in the package (they are so thin I could not tell), so I was trying to attach one base ring on top of another, so I just separated the UV base ring and put it away and viola the ND filter fit perfectly into the open base ring. I do not like putting extra glass on my lens, so I dont use UV filters.

In order to do the product justice, I still have to use this filter in the "battle" apart from a few test shots. Test shots were fine. It would have been nice to have a mark on the movable ring that shows the upper, dark position, I'll just touch the upper, dark position with a tippex, just think that makes it easier for me to position it correctly. All in all good value for money and looks and feels good.

Filter is great. Price - performance is great.

I am a very amateur photographer who loves to take nature and landscape photography. This lens filter really added a nice depth to the sky, especially the clouds in my unedited photos! It offers a nice contrast between the different cloud layers. It comes with a nice hard plastic case for protection and was super easy to screw up. My only complaint is that there are no markers around the edge of the filter to help you line it up. You need to look at the gradient on the filter yourself to make sure it doesn't end up in the wrong position (see image 2!). In my 2nd picture you can see where I had to rotate the filter 90 degrees. But just fix it! The 3rd picture is with filter, the 4th picture without. You can see, how much richer the sky looks with the filter! Overall I'm very happy with this filter and love using it on sunny days with clouds in the sky for instant extra depth and richness!