Yes, the OM System OM-5 is compatible with the Samsung PRO Plus 256GB SD.
Samsung PRO Plus is UHS-I, rated UHS Speed Class 3 (U3) per Samsung's own spec page. OM System OM-5's own manual explicitly recommends a 'UHS-II or UHS-I U3 card' for ALL-I shooting and 'Class 10 or higher' for standard movie shooting -- UHS-I U3 cards are supported, not blocked. Card meets the floor -- corrected 2026-06-21, previous verdict ("UHS-I bus cannot sustain the required write rate") was never sourced and contradicted OM System's own manual.
“Class 10 or higher SD card is recommended for movie shooting UHS-II or UHS-I U3 card is recommended for ALL-I shooting”
Last verified:
Confidence: inferred