The highest display resolution of the Samsung UE55J6100 is Full HD. That's 75% less display resolution than a 4K Ultra HD TV, which is the most common display resolution. Full HD TVs have a resolution of 1920 x 1080 pixels.
Full HD TVs have a resolution of 1920 x 1080 pixels.
There are a number of other Full HD televisions currently available that you might also want to consider including cheaper televisions such as the Sharp LC-50LE651 (£849.66).
If the display resolution of this large TV is too low for you then you might want to look at the Hisense H50M3300 (£429.00) (4K Ultra HD and cheaper); or the Hisense H55M3300 (£529.00) (4K Ultra HD and higher rated), or the Samsung UE50KU6000 (£489.00) (4K Ultra HD and higher rated).