Backlight Bleeding or in German, the problem with the backlight also called halos.
Bottom Left edge backlight shines through very aggressive. This bright-yellow spot destroys the actually good overall impression of the entire monitor. He draws the eye invariably there to look out.
Eg if you see Staring a feature film has the black bars and affects almost all Hollywood productions, which these are almost ausschlieslich in 1.85: 1 aspect ratio, then this flaw falls extremely negative on.
I had "fortunately" only one of these halos, but if you take questioned Google.com, you will find examples of bad and unfortunately this Dell model is not uncommon here.
I am extremely disappointed with the quality of Dell and am now the Asus PB278Q try my luck.
I wonder now if I just really had a lot of bad luck, or view the meissten 5-star reviews here this flaw as important !? And of Prad.de I am also disappointed there, the monitor is rated very good and not a word of backlight bleeding or Lichhöfen. Since Dell has probably given a lot of effort to send the "right" monitor to Prad.