Nits cd/m²

Typical values: office IPS 250–350 nits, modern HDR TV peak 800–2000 nits, top-tier OLED phones 2500–3000 nits peak. The HDR10 standard requires 1000-nit peaks; Dolby Vision spec goes up to 10 000. Phones need high peak nits for outdoor readability — the iPhone 15 Pro hits 2000 nits outdoors. The full-screen white draws too much power to hold peak levels for long; that's why both "peak" and "sustained" brightness are specified.