U3 is pretty new and is a response to ensure that consumers can easily identify those cards with the highest transfer rates suitable for 4K/2K filming. This can be seen on cards as a number within a bucket/U. UHS sets a minimum transfer of data that the card is capable of in a similar way to the SD speed class. Ultra High Speed 1 – U1 is the same as Class 10 (10MB/s). Just to confuse things a little more there is also an Ultra High Speed (UHS) classification.
This can be seen on cards as a number within a circle. Speed Class is a minimum speed based on a worst case scenario test and represents the minimum transfer rate of data that the card is capable of. The Speed Class Rating is the official unit of speed measurement for all SD cards, including both full and micro sized versions. Now this doesn’t matter if your camera is a GoPro, Contour, Garmin, Sony or whatever because without a good memory card you may struggle to capture the video footage you want.Īs cameras have become more capable the need for faster cards with greater capacity has become more important. One of the biggest areas that is overlooked when getting a video/camera setup for trips out is the speed of the your SD or Micro SD card.
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