At 512GB, Codex's Excel CFexpress 4.0 Type A card doubles the space of the 256GB card at the same 850MB/s sustained write, so Sony shooters go longer between card changes. It's rated for 300TB written.

It suits Sony's FX6, FX5 and FX2, along with the FX3, FX30, a1 II, a7S III and a7 IV. It reads at up to 1,800MB/s, writes at up to 1,650MB/s and is VPG400 certified for uninterrupted 8K video, moving between video and burst stills on the same card.

HeatControl avoids thermal throttling as the card warms up, and FastLane keeps sustained writes high for continuous recording. ByteGuard pairs LDPC error correction with block-level RAID 5 to protect your footage. The card draws 2.8W working and 0.5W at idle, which is easy on camera batteries, and carries a 3-year warranty when you register it, plus 2 years of data recovery.