MWC 2017: Sony launches slow-mo Xperia XZ Premium phone

Sony's latest smartphone is capable of filming smooth slow-motion footage at four times the rate possible on Apple and Samsung's top-end models.

The Xperia XZ Premium captures video at up to 960 frames per second (fps).

The achievement was made possible by a new type of image sensor that has built-in memory of its own.

Sony's smartphone market share is small, but it usually makes its sensors available to rivals about six to 12 months after they debut.

Apple, Samsung, LG and Xiaomi are among those to have used its technology in recent handsets.

The new phone was unveiled alongside several lower specification devices on the first day of the Mobile World Congress trade show in Barcelona.

"Despite this being one of the best devices at MWC, I don't see it changing Sony's fortunes," commented Francisco Jeronimo, from the market research firm IDC.

"If you go through Sony's financial statements you can see it now makes more money from selling phone cameras to its competitors than selling its own smartphones, which is quite remarkable

"So, its phones are a way to show off its capabilities, and the new camera is outstanding - not just the slow-mo but also the picture quality."

Sony shipped about half as many smartphones in 2016 as the previous year and has about 1% share of the market, according to IDC, putting it in 17th place.

Sony calls the new technology Motion Eye.

It uses a three-layer stacked sensor fitted with one gigabit of dynamic random-access memory (DRAM). Doing so lets the component temporarily store a rapid burst of video data locally before it is transferred to other memory components, which takes more time.

Compiled by Thomas Okundi