HDR (High Dynamic Range) is not just a gimmick for marketing. It has its purpose which is tremendously applicable in wide variety of usuage. HDR is a color technology that enables any screen (monitor, TV, phone, tablet) to display a wider range of colors and contrasts. HDR supported monitors can display images and videos more realistically than the normal ones. HDR enhances the experience of content creation and consumption with detailed display-nuances and true color tones as well as overall image quality. HDR makes watching a wildlife movie feel like its happening in front of your own eyes.
HDR is a color technology that enables any screen (monitor, TV, phone, tablet) to display a wider range of colors and contrasts. HDR supported monitors can display images and videos more realistically than the normal ones.
Not all the monitors and TVs available in the market support HDR. In order to display HDR images, both the content and the display screen need to be suitable. HDR directs the screen to tell what exactly the color levels are best suited for realistic output. HDR has all these types of necessary color information rooted in it. A video or an image can easily use this information and give you the right picture quality on your screen.
To generalize the idea, DisplayHDR 1000 can yield the same brightness level you get when you lit 1000 candles in front of you.
HDR enabled monitors can display deep blacks and bright whites which takes the contrast level to the next dimention. Generally, these monitors can display images much brighter than the normal ones without loosing the image quality, sharpness and color tones.

There are 3 types of HDR which are DisplayHDR 400 (which can support up to 400cd/m2 peak brightness), DisplayHDR 600 (which can support up to 600cd/m2 peak brightness), and DisplayHDR 1000 (which can support up to 1000cd/m2 peak brightness) respectively. To generalize the idea, DisplayHDR 1000 can yield the same brightness level you get when you lit 1000 candles in front of you.
Since its inception, HDR is becoming mainstreaming in gaming and movie production since they require higher level of detail and vibrant color reproductions. HDR make a movie watching experience like no other. HDR enabled camera can bring the subject details back – like washed out skies, water reflections, night photography and so on. To this day, it seems that only Pros can take the full advantage of HDR since HDR enabled screens are expensive in general. We might have everything HDR-enabled after a couple of years. As of right now, for us, and as a general user, its the same with or without HDR.
Also read: Vector Graphics vs Raster Graphics