The PQ EOTF, standardized as SMPTE ST-2084, is used for both Dolby Vision and HDR10, only the former stipulates 12 bits while the latter uses a 10-bit version of PQ. Take this quiz to test your knowlege: why doesn’t most HDR10 content suffer from appalling banding artifacts? Choose from among one or more of the following:
(a) The PQ EOTF is based on a study that some believe greatly overestimates the ability of the human visual system (HVS) to discern changes in contrast/brightness.
(b) HDR10 encompasses a luminance range far narrower than that of Dolby Vision.
(c) Today’s panels cannot reproduce the entire BT 2020 gamut, reducing the number of bits required to avoid banding.
(d) PQ 12-bit was designed to ensure there was no banding on noise-free images such as graphics, animation and CGI while most natural images contain some noise.
(e) All the above.