HDR introduction paper:

HDR10 really only starts at 1000 nits and [that display] only hits 350 nits. Good blacks are also important for HDR, and the PD3220 has an IPS panel instead of OLED or QLED, so it's not very good for that either. Disciplines benefitting from HDR are lighting and VFX mostly. Other artists benefit from having a larger coverage of color gamut. The color gamut is generally agreed on to be covered at >99% is DCI-P3 (see more below). That color gamut is already covered by a monitor like the Dell U2723QE, which coincidentally also has a higher nits than the BenQ without even being HDR (officially). When looking at certifications from cinema, streaming services, and Dolby (Microsoft games) they recommend:

Professional HDR monitor
Meets minimum Dolby Vision specifications
P3 D65, PQ / ST.2084, ≥1000 cd/m2

Additional notes:

cd/m2 is equal to nit, they're the same number
P3 D65 means DCI-P3 color gamut with a white balance of 6500 kelvin
In regards to color coverage; a good HDR monitor will do both very bright pixels (expressed in nits) and expanded color gamut coverage (usually expressed in DCI-P3. Sometimes also higher bit depth for color channels (usually 10 bit)

START

(WIP) Content Creation

[Gerben] Talk about HDR concent creation, which assets are generally already authored in “hdr space” (skyboxes, lenslfare textures, some vfx textures)
[Gerben] Most textueres are still totally fine as SDR (8bit per channel)
[Gerben] talk (briefly!) about color spaces in relationship to content creation

Very bright pixels (bulbs, neon, vfx)

In SDR, the tonemapper will make very bright objects decrease in saturation. This is an expected result. In order to sell this effect more, bloom is added to fake the appearance of intense brightness on SDR screens.