Really like the concept of a quick change filter. I wasn't looking for a ND filter to allow 1 minute plus exposures, only giving me a few seconds in brighter lighting conditions, so minus 4 stops sounds about right. These Freewell filters are very nicely made. Even the packaging is quality. My big disappointment was that the filter did not come with the UV filter/magnetic attachment ring a described in the What's in the box description. Don't know if that B&H's fault or Freewell's, but that's a minus one star.

After you've used the magnetic versions the regular screw on routine seems badly antiquated. It would be nice if the magnetic scheme became more standardized so we're not at the mercy of particular manufacturers discontinuing their product lines and messing up our collections in the future. That hasn't happened to me yet, but just wait....

I've standardized on this 82mm size with magnetic step ups on smaller lenses. It's great having one set of filters and that's it, no matter which lenses you're bringing along for the day. Being magnetic and quick means you're more likely to use them instead of just lazily skipping filters because the threaded ones are so tedious.