Yes, the Panasonic Lumix G9 II is compatible with the Sony SF-G Tough 128GB.
Sony SF-G Tough writes at 299 MB/s. Panasonic G9 II 4K60 minimum is 90 MB/s (Video Speed Class V90). Passes by 209 MB/s.
“Compatible with UHS-I/UHS-II UHS Speed Class 3 standard SDHC/SDXC Memory Cards”
Last verified:
Confidence: inferred