The 4K Video Star


Ambarin Afsar tests the Sony 64GB Class 10 card and finds out that it is pretty fast indeed.

Sony 64GB UHS-I SDXC Memory Card (Class 10/U3)

Sony 64GB UHS-I SDXC Memory Card (Class 10/U3)

With technology that can provide 4k video in DSLRs, there is a need for cards that offer read as well as write speeds that can keep up. Sony’s 64GB UHS-1 Class 10 SDXC memory card offers a maximum read speed of 95MB/s and a maximum write speed of 90MB/s. The card is also water, dust and X-ray proof, resistant to UV light, magnets and static, and is also capable of withstanding extreme temperatures. Users can also download a file rescue software that can help in case of accidental damage or deletion of RAWs, JPEGs and video.

I tested the card with the Canon EOS 7D Mark II, a camera that offers a frame rate of 10fps. The card performed perfectly well when I was shooting in the Burst mode, and I had no trouble writing 50 consecutive RAW + Fine JPEGs. But, the camera also has a very large buffer, and so, all in all, my experience with the card was very smooth.

I would recommend this card to anyone looking to shoot video intensively, or for anyone requiring fast frame rates. However, SanDisk has a 64GB card with the same read/write speeds and other specifications, available for about one thousand rupees lesser.

Rating: 3 and 1/2 stars out of 5


  • Product Name: Sony 64GB UHS-I SDXC Memory Card
  • MRP: Rs. 9942
  • 64GB Storage Capacity
  • Class 10 / UHS-I / Speed Class U3
  • Max. Read Speed: 95 MB/s
  • Max. Write Speed: 90 MB/s
  • Built-in Write Protect Switch


Tags: 4k video, 64gb, Ambarin Afsar, class 10, fast, Memory Card, Sony, u3, uhs-I