Canon has also certified the 3500x in 64GB, 128GB and 256GB capacities for the Canon C300 Mark II. With maximum read speeds of 525 MB/sec and maximum write speeds of 445 MB/sec (that's megabytes, by the way, not megabits), they are more than fast enough to keep up with the C300 Mark II even in its high-data rate 4K and 120 fps recording modes. ARRI has approved Lexar's Professional 3600x cards for use in AMIRA and ALEXA Mini as well as the forthcoming full-size ALEXA SXT (when used with ARRI's CFast 2.0 Adapter 2 in the SXT's media bay). Lexar's 3600x cards are available in 128GB and 256GB capacities. Though they feature the same maximum read and write speeds as the 3500x versions discussed above, be sure to use only cards marked 3600x in ARRI cameras. While it may be possible to use these 3600x cards in other devices, such as the C300 Mark II, understand that Canon has only qualified and approved the 3500x cards for use in the C300 Mark II. For other devices, always be sure to check the manufacturer's website to see which cards have been certified for use with their equipment. You can also see Lexar's official compatibility chart below.
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With the CFast 2.0 memory card market maturing, the format has been rapidly and widely adopted by digital video/cinema cameras (and, increasingly, still cameras as well). It's great to see competitively priced, high performance cards from Lexar being certified by manufacturers for use in a wide variety of gear -- that's good for everybody.
