ColSebastianMoran
( IRL Richard Karash )
Do you happen to know what focal length it's intended for?
Brett, it's a generic design, not specific design for a specific lens. So, it's "loose" not tightly designed for the lens.
It's for a "Normal" lens. And, it seems to be set up for 3x2 aspect ratio. That's about the best I can say.
I think it's a neat product, with it's included rectangular cap, but very hard to find.