The filter comes very well packaged in a box that doubles as a picture frame. The actual storage takes place in a very high-quality leather case with an "ejection strap" so that you do not have to tap your fingers into the filter disc when removing it. The filter and its mechanics are very elegantly manufactured, so the filter thread can be easily attached without scraping noises and frequent attempts to attach it screw in and loosen again with moderate force after tightening, provided the internal thread of the optics is not damaged and is of the same high quality. What is special about this (ND) filter is of course the possibility of continuously adjusting the filter grade/strength using the screwed-on brass handles, what also works very smoothly and impressively! So a filter change is largely unnecessary, a grip on the rotary ring is enough. The range in which the filter effect can be changed is enormous. As an example: Aperture 13 to aperture 5.6 with the same exposure time or with a constant aperture, the exposure time changes from about 1/4000s to 1/320s. This saves a few filters and enables fine and simple adjustment to the desired effect! In combination with the K&F quality of the Nano-x Pro series, the price is also put into perspective. Personally, I am definitely enthusiastic, I have never had so much fun with a filter ... This saves a few filters and enables fine and simple adjustment to the desired effect! In combination with the K&F quality of the Nano-x Pro series, the price is also put into perspective. Personally, I am definitely enthusiastic, I have never had so much fun with a filter ... This saves a few filters and enables fine and simple adjustment to the desired effect! In combination with the K&F quality of the Nano-x Pro series, the price is also put into perspective. Personally, I am definitely enthusiastic, I have never had so much fun with a filter ...