07-01-2020, 12:54 PM
I like the concept very much. I'm actually surprised nobody came up with a similar solution already:
https://www.kickstarter.com/projects/revoring/revoring-a-variable-step-ring-for-your-camera-lens-filters
https://www.kickstarter.com/projects/revoring/revoring-a-variable-step-ring-for-your-camera-lens-filters