Most cameras these days use an SD card to save images to, and the speed at which they can do this has become more and more important as cameras produce larger files of high-resolution photos and videos. 

The SD Association is trying to keep on top of the growing file sizes so that we can take, and view these larger files smoothly. Today they've announced SD Express 8.0, the latest leap forwards in SD card speed specification, allowing for a 3940 MB/s transfer rate. That's 4x faster than the original spec. 

This sounds great, and will allow for 4K and 8K video as well as 360 images to be captured and played back flawlessly.

The SDUC technology means that SD cards with up to a 128TB capacity are theoretically possible in the future. "Activities like taking slow motion videos or burst photos at athletic events could benefit from greater frames/detail in captures.", say the SD Association. 

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However it may take a while for the new spec to make it down into our cameras. Some of the latest camera models still don't feature UHS-II (which uses SD 4.0, released all the way back in 2011). UHS-III was released in February 2017, with no sign of this making it into a camera body as yet. So it may take a while before we can experience the power of SD Expres 8.0 in our everyday image taking. 

via Hexus.net