Yes, the Lexar Professional 1667x 64GB SD works with the Sony Alpha A9 III — but only Compatible with standard XAVC HS 4K (280Mbps), XAVC S 4K.
Sony A9 III accepts SD UHS-II. Lexar 1667x is V60 rated (write ~120 MB/s), meeting the V60 minimum for standard XAVC HS 4K (280Mbps) and XAVC S 4K (280Mbps). Cannot record XAVC S-I 4K (600Mbps, requires V90) or S&Q Motion 4K (500-560Mbps, requires V90).
Conditions for compatibility
Compatible with standard XAVC HS 4K (280Mbps), XAVC S 4K (280Mbps), and XAVC S HD (100Mbps) — all require V60 or lower. Cannot record XAVC S-I 4K (600Mbps, requires V90) or XAVC S-I HD (222Mbps, requires V90). S&Q Motion 4K requires V90 — not supported. Upgrade to V90 for intra-frame or S&Q recording.
“This camera supports CFexpress Type A memory cards and SD memory cards (UHS-I, UHS-II compatible).”
Last verified:
Confidence: inferred