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Without a reflectance/absorptance value it is hard to say but Black 3.0 with 99.6% is nowhere near close to Vantablack with 99.965%. Edit: People are quoting 9
by kelsolaar 3y ago
Without a reflectance/absorptance value it is hard to say but Black 3.0 with 99.6% is nowhere near close to Vantablack with 99.965%.
Edit: People are quoting 99.95% for Black 4.0 which is impressive!
- mi_lk 3y ago> Black 3.0 with 99.6% is nowhere near close to Vantablack with 99.965% Curious, under what circumstances will this 0.365% be practically important?
- isilofi 3y agoHuman vision is logscale, not linear. So in a comparison, you will see a difference.
- tubs 3y agoConsider it in terms of error. The difference is 0.4 to 0.035 An order of magnitude more light reflected.
- sandworm101 3y agoInvert those numbers. 99.6 is actually about 10x brighter, more reflective, than 99.965. Depending on light levels, this would be very noticeable.
- dr_kiszonka 3y agoWould it also be noticeably warmer than a regular black (or white) paint?
- sandworm101 3y agoWarmer in color tone or warmer in that it retains more heat? These blacks are "black" in that they absorb visible light. How or if they absorb IR light (the bulk of heat energy) is a different story. They may be totally reflective in IR. But yes, something that is more black in visible light is probably also more black in IR. But also remember that black objects are also better at emitting IR.
- dr_kiszonka 3y agoThanks for your reply. I meant warmer in terms of heat. I remember being told that white objects reflect heat, which is why white clothes and white buildings are better in hot, sunny locations. I thought the reverse would be true for black. Thanks for educating me!
- dist-epoch 3y agoHumans perceive some things logarithmically. For example our hearing range is 20-20000 Hz, yet we can perceive a 20 Hz sound as different from a 40 Hz one, the difference between them being 20 Hz which is 0.1% of our hearing range.
- SirMaster 3y agoWell, take a look here at Black 3.0 paint next to simple black velvet. https://cdn.discordapp.com/attachments/824109424255434803/887758603958779935/image1.jpg https://cdn.discordapp.com/attachments/824109424255434803/88... Seems there is a lot to go beyond 99.6% I don't know what the absorption value of the black velvet is though. I am curious how Black 4.0 would compare to black velvet.
- igrekel 3y agoI was using their black 2.0 and while it's exceptional and has a certain unnatural feel to it under the right lighting, it doesn't achieve the same effect as Vanta black. This sounds like a good improvement.
- alok-g 3y agoAgainst a 100% diffuse reflection, that would be a 2000:1 contrast ratio. And we have TVs commonly claiming much larger! ;-)