Delighted with my 55mm magnetic filter kit. It is made up of 4 components, an adapter, a UV filter, a polarizing filter and an ND1000 filter. Both the polarizer and the UV have a thread, so they can be screwed on the front part of the lens, but they also have a magnetic part, so the rest of the filters can be placed magnetically on them. The combinations to use CPL and ND1000 can be :-Adapter+CPL, Adapter+ND1000 or Adapter + CPL + ND1000-UV + CPL Filter, UV + ND1000 Filter, UV+CPL+ND1000 Filter They come in a padded case with an inverted zipper to prevent some water from entering inside. case of rain. It can be clipped on your belt or anywhere else to use or carry comfortably. I have several types of filters, threaded, square and these. Without a doubt, the magnetic filters are my favorite filters, I am super happy with them because they are very comfortable to use, especially for that reason, for the convenience of use. It is very easy to insert and remove any of the filters. You leave the UV or the adapter in and it's instant to attach or remove any of the others. I always have the UV on, which also has a thread on the outside to be able to put the lid on, the thread is fine, but the lid remains fixed and does not fall off. This way, I always have the camera ready to put any of the other filters on quickly and easily. As for image quality, I have little complaint, I have not noticed any loss of sharpness or any color cast. I have been able to use both the UV+CPL+ND1000 up to 12mm on my APSC camera without vignetting. The filter I use the most is the ND1000 and it is very easy to use. Set the parameters that you consider for the photo and focus, change the camera to manual focus so that the focus remains fixed, place the ND1000. Now you will see everything dark and you will have to change the time. What time do I use? Very simple, take the time you have set and multiply it by 1000. A 1/125 photo without a filter should be taken at approximately 8 seconds to obtain a similar exposure. If what you are looking for are good quality filters, that do not negatively affect your image and that they are very comfortable to transport and use, I would definitely buy some magnetic ones. Carrying the square ones is sometimes a hassle and the threaded ones are much more uncomfortable for me, in addition to the risk of them falling, I am a bit big-handed and it has already happened to me several times with the threaded ones. With these at the moment no problem and very happy. I leave you a video and some photos that I hope will help you!