ProGrade Digital's latest CFexpress 4.0 cards are too fast for current cameras

ProGrade Digital 1.6TB CFexpress 4.0 Type B Iridium Memory Card
(Image credit: ProGrade Digital)

ProGrade Digital has been on a a roll recently, releasing a host of new memory cards and a new card reader. Headlining the new line-up is an entirely new range of CFexpress 4.0 cards: Iridium.

Iridium CFexpress 4.0 Type B cards

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Ben Andrews

Ben is the Imaging Labs manager, responsible for all the testing on Digital Camera World and across the entire photography portfolio at Future. Whether he's in the lab testing the sharpness of new lenses, the resolution of the latest image sensors, the zoom range of monster bridge cameras or even the latest camera phones, Ben is our go-to guy for technical insight. He's also the team's man-at-arms when it comes to camera bags, filters, memory cards, and all manner of camera accessories – his lab is a bit like the Batcave of photography! With years of experience trialling and testing kit, he's a human encyclopedia of benchmarks when it comes to recommending the best buys.