In still photography the term HDR is used in a different context to describe a technique to capture more dynamic range by stacking several exposures done with different shutter speeds. The result (rendered for a Standard Dynamic Range display) creates a “hyper-realistic” looking image. Recent smart phone cameras often use this method to capture HDR images.
The term HDR used in a motion picture context focuses on the capture and displaying of HDR images. These are images with more detail in the highlights and shadows shown on an HDR display. ARRI digital cameras capture the highest dynamic range of any camera, and thus have been capturing HDR images since we introduced the first ALEXA camera in 2010. In contrast to still photography HDR, ARRI digital cameras capture a high dynamic range image at one point in time, and thus avoid any motion artifacts that would result from capturing different exposures at different times.