HDR is the next big thing in display
With 245,000 visitors, 1,645 exhibitors and exhibit floor space totaling 150,000 square meters IFA is one of the world’s leading trade shows for Consumer Electronics and Home Appliances.
Organized by The German Association for Entertainment and Communications Electronics in cooperation with Messe Berlin, it took place from September 4th to September 9th.This year HDR (High Dynamic Range), touted as the next big thing in display technology, replaced 4K as the primary talking point in television sets on display at the Berlin show. In developing HDR for video engineers borrowed a page from their colleagues in photography, where HDR is used to produce brighter and more detailed photos by taking multiple exposures and then combining them, delivering more detail in the brightest and darkest parts of a scene that would otherwise be lost. HDR is also available on smartphones, for example there is an HDR mode on the Samsung Galaxy S5.Dynamic Range, the ”DR” in HDR, is the difference between the darkest image and the brightest image that can be displayed. Brightness is measured in a unit called a nit. On a normal sunny day, the illumination of ambient daylight is about 107,000 Lux or 30,000 nits. But today’s TV broadcasts are constrained to about 100 nits. When the maximum brightness is restricted, brighter colors quickly look washed out, limiting the quality of the viewing experience.This separation between bright and dark used to be described by the term “contrast ratio”, measured in foot-Lamberts, but since there is no regulation on how to measure contrast ratio, TV marketers became, shall we say, creative in presenting their numbers. One thing is certain, the higher the dynamic range of a TV display, the more realistic images it can create. A high-contrast image can appear to have some of the depth and realism of 3D, even if it is not actually 3D.