Yes, the Canon EOS R7 is compatible with the SanDisk Extreme microSDXC UHS-I 128GB.
Canon EOS R7 has a full-size SD card slot. SanDisk Extreme microSDXC UHS-I 128GB (V30 class) fits via the bundled microSD-to-SD adapter and clears every 4K recording mode except the highest-bitrate 4K UHD 59.94p/50.00p IPB(Standard) mode, which requires Video Speed Class V60 per Canon's own manual -- this V30 card doesn't meet that floor.
Conditions for compatibility
requires the bundled microSD-to-SD adapter (included with the card) for physical fit.
Limitation
Does not meet the floor for 4K UHD 59.94p/50.00p IPB(Standard) recording (requires Video Speed Class V60 per Canon's own manual; this card is V30 class). Every other mode -- including the same resolution/framerate at IPB(Light), and all 29.97/23.98/25.00p 4K modes -- only requires UHS Speed Class 3, which this card clears.
“L 4K UHD Fine 4K UHD 4K UHD Crop 59.94 50.00 IPB (Standard) UHS Speed Class 3 or higher Video Speed Class V60 or higher IPB (Light) UHS Speed Class 3 or higher 29.97 23.98 25.00 IPB (Standard) UHS Spe”
Last verified:
High confidence