Yes, the Nikon Z6 III works with the Sony Tough G 128GB CFexpress Type B — with conditions (see below).
Sony Tough G 128GB CFexpress Type B's VPG certification could not be confirmed -- Sony's own spec page is unreachable (403 on every Sony domain tried) and no VPG rating appears on any capturable retailer listing (studiodepot.com, hotrodcameras.com, thepixelconnection.com list only peak 1700 MB/s read / 1480 MB/s write, no VPG mention). Peak write speed is not evidence of sustained performance. Type B slot confirmed on Nikon Z6 III, which requires 250 MB/s sustained write for 4K60 (Nikon's own manual states this as a raw sustained-write floor, not a class rating) -- verify this card's real sustained write speed or VPG rating before relying on it for 4K60.
Conditions for compatibility
Fits Slot 1 (CFexpress Type B). Sony Tough G 128GB's VPG rating is not confirmed in the DB -- verify its real sustained write speed or VPG400 before relying on it for 4K60 (250 MB/s sustained-write floor).
“Nikon Z6 III product page: Dual Card Slots — SD UHS-II + CFexpress (Type B)/XQD; CFexpress Type B cards supported in the dedicated CFexpress/XQD slot.”
Last verified:
Compatibility inferred from spec rule (citations above are manufacturer-verified)