Yes, the Canon EOS R6 Mark II is compatible with the Sony SF-G Tough 128GB.
Sony SF-G Tough writes at 299 MB/s. Canon R6 Mark II 4K60 requires 60 MB/s (Video Speed Class V60). Passes with margin.
“Canon EOS R6 Mark II Compatible Cards: SD/SDHC/SDXC with UHS-II and UHS-I supported; for movies use a card with ample performance (fast enough writing and reading speeds) per Canon online manual.”
Last verified:
Confidence: inferred