High Definition TVs are now being replaced by 4K TVs in our homes - offering four times the number of pixels of HD.
Manufacturers have now started adding High Dynamic Range (HDR) on their latest models giving a greater range of brightness, luminosity, depth and detail to the picture.
But will it bring a real improvement in picture quality?
BBC Click's Dan Simmons went to Sony's British headquarters to check out HDR to see how it compares with a standard 4K picture and find out more about the technology behind it.
More at BBC.com/Click and @BBCClick.