Extended tonal range capturing brightness levels beyond SDR limits — preserves shadow and highlight detail simultaneously. Demands calibrated monitors and HDR-capable delivery specs.
High Dynamic Range
On set and in the grading suite, you notice the difference immediately: HDR shows you brightness information that Standard Dynamic Range (SDR) simply clips. Where with SDR you juggle between pure black (0) and pure white (100 IRE), with HDR you work with an extended tonal range — typically 10 bits or higher per channel, color spaces like Rec. 2020 instead of Rec. 709. This means not only more brightness levels, but also more precise color gradations and less posterization in fine transitions.
Practically, this means: a scene with a bright window front and a dark interior — with SDR you have to decide what to sacrifice. With HDR, you retain details in both areas because your sensor and your grading pipeline can capture and preserve more information. The camera (RED, ARRI, Sony, Canon — all modern cameras) already records close to HDR; however, in the grading suite (DaVinci Resolve, Flame), you must then work with calibrated HDR monitors — a standard broadcast monitor won't help you here. The reference must be correct, otherwise you're grading into nothingness.
Important: HDR is not simply "brighter and more colorful." It's about tonal precision and peak brightness — nit values that you can actually see on the monitor. When mastering for cinema (DCI) or streaming (Netflix, Apple TV+ — everything HDR-ready), you have to create separate HDR versions. SDR remains relevant in parallel because not every viewer has an HDR display. So you often work dual: an SDR chain for TV/web, an HDR chain for premium platforms. This doesn't limit your creative freedom — it expands it. You simply have more room in the highlights and shadows, more precise color control across the entire space.
On set itself, you also get this via monitoring output — external recorders like Atomos or Blackmagic give you an HDR preview if your camera delivers the raw material in an HDR-compatible format. This saves you surprises later in grading. Pay attention to your LUT chain: watching an SDR LUT on an HDR monitor is pointless. And vice versa — HDR grading on an SDR monitor is pure guesswork.