How does it compare to vanta black?
> “Black 4.0 absorbs an astonishing 99.95% of visible light which is about as close to full light absorption as you’ll ever get in a paint,” said Semple. He notes this outperforms Vantablack’s S-Vis spray on product which only achieves 99.8%, as did his previous Black 3.0 paint.
Also, you yourself can buy Black 3.0 and 4.0 whereas one person owns the worldwide artistic rights to Vantablack (who is also banned from buying Black X.0)
Not that it really matters. The "artistic rights" were a one off marketing gimmick.
You can't actually buy Vantablack as a paint. You have to have approval from the UK Ministry of Defense and then send your part to the Surrey Nanosystems facility to get coated.