Yes, the Canon EOS R3 is compatible with the Kingston Canvas React Plus V90 128GB.
Canon EOS R3 Slot 2 accepts SD UHS-II. Kingston Canvas React Plus V90 writes at 260 MB/s (V90) -- meets all SD-recordable modes on the R3 including 4K 29.97fps ALL-I and Full HD 239fps slow-motion (both require V90 or lower).
“[200 MB/s or higher] Video Speed Class V90 or higher”
Last verified:
Confidence: inferred