This is a ND filter cap for your runcam split mini, or any other camera using a 12mm lens.
Best would be to insert some ND filter glass. For now i tried using some car window tint. I actually only have one foil intensity to test. It blurs alot, but reduces the jello.
You may print the "cutout" file as a cut template for the foil.
I am not sure if i prefer the jello or the look of the foil.... Feel free to test around and let me know if you found a good balance between foil intensity and jello.
The protective cap is for transport or storage.
Looking forward to your makes and feedback!
Car window tint overview
(Link to bangood.com)