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Display P3 is a color gamut, it defines what color each number means. This is orthogonal to bit-depth, which is how many bits are used to represent each number.
by reubenmorais 8y ago
Display P3 is a color gamut, it defines what color each number means. This is orthogonal to bit-depth, which is how many bits are used to represent each number. This means with the same color gamut but with HDR (more bits) you can have smaller steps between colors, improving color banding, gradients, etc. You can have any combination of (sRGB, P3) x (8-bit per channel, 10-bit per channel), 10-bit per channel being a common implementation of HDR these days.
I don’t know if Apple makes HDR displays.
- simonh 8y agoI don't think they do. The 27" 5K on the latest models looks like it's their most advanced model, and it's 527cd/m2 and contrast ratio of 960:1, while the Ultra HD Alliance certifies HDR displays at a minimum of 540cd/m2 and 1,080,000:1 for LDC displays. So they're super nice, I'm very happy with my 2017 model and it's the best display I've ever used, but not HDR.
- m_eiman 8y agoThey claim to support "one billion colors", which is roughly 10 bits per channel. There was a lawsuit about dithered displays back in the 90s that made them write "millions of colors" instead of "16 million colors", so I'd say it's unlikely that they're not actually providing those 10 bits. So their fanciest displays are both Display P3 and 10 bits per channel.
- CarVac 8y ago10 bits per channel does not necessarily mean you have HDR. In the past, it was used to get finer gradations, which is in fact fairly important if you are working with black and white , to avoid banding. HDR involves mapping the 10 bits over a different tone response curve that covers a wider output dynamic range.