Moreover, the Adaptive Display only works with a limited number of apps, such as the Gallery, Samsung's proprietary Internet browser and video player and Google Play Books, so you won't get the benefit in every application. This is quite an achievement for Samsung, but its victory was a rather muted one once we put the Tab S 10.5 next to Sony's Xperia Z4 Tablet, as Sony's display was the clear winner for visual fidelity. It makes a huge difference when it's turned on, and the sheer richness of colour and fine shadow detail on show was vastly superior to what we saw on the iPad Air 2. Samsung does have a secret display weapon up its sleeve, though, as the Tab S 10.5 has an Adaptive Display feature which uses an RGB sensor to automatically adjust the colour range, saturation and sharpness of the screen based on the content you're viewing at the time. The Tab S 10.5, on the other hand, has what Samsung calls 'S Stripe', where each pixel has a rectangular red and a green pixel and a longer, thinner 'stripe' blue pixel, so each pixel has the full three sub-pixels. The Tab S 10.5's screen uses a slightly different AMOLED technology to Samsung's smaller Galaxy Tab S 8.4, as the 8.4 has a pentile pixel arrangement, where there are two subpixels per pixel (red and green or blue and green) instead of three (red, green and blue).

It's also received a £100 price drop since it first launched, too, making it a bit of a big screen bargain. Samsung's superb Galaxy Tab S range has just been replaced by its pair of brand-new Tab S2 tablets, but if you don't want to pay full price for the Tab S2 9.7 or want something a little larger, then the Galaxy Tab A 10.5 is still a great bargain. With its high-resolution 2,560x1,080 Super AMOLED panel, the Galaxy Tab S 10.5 continues to have one of the best screens around, putting up serious competition to the iPad Air 2, Nexus 9, and even the Sony Xperia Z4 Tablet.

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