When Sony launched its long-awaited videocentric Alpha 7 sequence digital camera, the a7S III, you might need missed a small however not insignificant element: It was the world’s first digital camera to help CFexpress Kind A playing cards—in two particular reminiscence slots that additionally help the ever present SD card. Alongside the a7S III, the Japanese firm additionally launched the first-ever CFexpress Type A cards, boasting write speeds as excessive as 700MB/s and skim speeds as much as 800MB/s.
And no, we’re not speaking concerning the CFexpress Kind B playing cards supported by cameras just like the Canon EOS R5 and Nikon Z7 II. There are literally three CFexpress types utilizing the identical PCI categorical Gen3 interface and NVMe 1.3 expertise, which differ within the variety of obtainable PCIe information switch lanes: Kind A playing cards have one PCIe lane for a most 1GB/s bandwidth, Kind B have two lanes for as much as 2GB/s, and Kind C provide 4 lanes for a theoretical prime pace of 4GB/s. That makes even Kind A playing cards probably round 3 times quicker than the quickest SD playing cards.
Nicely over a yr later, enter ProGrade, which has introduced the primary different to Sony’s playing cards: the CFexpress Type A Cobalt (160GB), providing the identical most learn and write speeds of 800MB/s and 700MB/s, respectively. ProGrade claims a sustained write pace of as much as 400MB/s. These specs ought to make the cardboard simply able to recording as much as 8K/30p 10-bit 4:2:2 video, or 4K/120p 10-bit 4:2:2, within the case of the a7S III.
You may preorder the CFexpress Kind A Cobalt (160GB) from ProGrade’s online shop for $330.
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