Very good quality K & F Concept ND1000 square filter set consisting of glass filter holders and lens adapters for the filter holder. The package is divided into 3 parts: 1. A bag with metal rings adapters for different lens diameters. 2. A case containing the filter and its leather carrying case. 3. A box with the filter holder. The adapter rings allow us to place the filter holder on any lens as we have a large number of different diameters. They are made of black metal and are well made. With inscription on each ring of the corresponding diameter. The filter is made in Germany glass. It is a 100x100mm square and 2mm thick ND1000 filter. It allows us to remove 10 levels of light to make daylight long exposure photos perfect. In the example photo I've hung, midday is taken at around 30 inches. I love the game that you can get to this filter. The filter comes in a leather case and tissue paper. The case is heavy enough to protect it properly. The glass does not mark easily with fingers and does not attract dust. The filter holder is metallic with the part where the filters come from some kind of very hard plastic. They fit easily on two filters 100x100 and also on the slopes 100x150mm. The attachment system on the adapter ring is thanks to a very handy metal tab. In several tests I ran under different lighting conditions, I didn't notice the ingress of residual light because of the space between the filter and the portafilter. The photographs have a slight magenta tint that is very easy to edit, but they are not overdone at all. With the complete kit and price, it's a fantastic filter to experiment with and get excellent results. I'm really excited and really enjoying it. I highly recommend it!

For Fuji x100v, its easy to install and can be flipped to accommodate a WCL/TCL or a lens hood like in the photo. Will have to actually test it for street photography if its really water and dust resistant.

Very high quality ND1000 K&F Concept square filter set consisting of glass filter, filter holder and lens adapters for the filter holder.

The package is divided into 3 parts:
1. a bag with metal adapter rings for lenses with different diameters.
2. a box with the filter and its leather carrying case.
3. a box with the filter holder.

The adapter rings allow us to put the filter holder on any lens, since we have a large number of different diameters. They are made of black metal and well made. With inscription on each ring of the corresponding diameter.

It is a square filter ND1000 100x100 mm and 2 mm thick. It allows us to remove 10 light levels to make long exposures in daylight perfect. In the example photo I posted, it is taken at noon at 30 ". I love the play that can be taken from this filter.

The filter comes in a leather case and is covered with tissue paper. The case is sturdy enough to protect it properly.
The glass is not easily marked by fingers and does not attract dust.

The filter holder is metallic, with the part where the filters rest being made of some kind of very hard plastic. They easily fit two 100x100 filters

K&F Concept Square Metal 100mm Filter Holder with 8 Lens Filter Adapter Rings 49mm to 82mm. Great addition to my filter collection. I bought the wrong size filters so I had to buy this kit. Well built product with most of the adapters I needed. K&F seems to be making some really good stuff at a great price that will help us amateur snappers without breaking the bank.

Got this for my X100F. The filter gives my photographs a natural film look that I can't achieve in Photoshop, which is exactly what I was looking for. The 1/8th was perfect for me because I wanted a very subtle but noticeable change.

For beginners, the price is unbelievable and you also get a lens hood that costs more from Canon's original than this whole set would take in its place immediately

I'm really happy that this filter can be screwed onto my Nikkor Z 24-70 f/4 S with the lens hood in place. Obviously I need to reach into the lens hood to adjust the filter, but that's ok. No vignetting that I can see.
The filter works great, nice smooth action and a great range of density.

Works very well, I only recommend buying an additional lens hood because if there is backlight in the picture, it looks purple in the picture. Nevertheless, I am very satisfied, it does what it is supposed to do, I can't complain