Yes, the Panasonic LUMIX GH7 is compatible with the Sony Tough G 128GB CFexpress Type B.
Panasonic LUMIX GH7's Slot 1 accepts CFexpress Type B cards directly. Sony Tough G 128GB CFexpress Type B's VPG certification could not be confirmed (Sony's own spec page 403s; peak write is 1480 MB/s), but this doesn't affect the verdict here: Panasonic's own spec never gates any GH7 CFexpress-side mode -- including its top tier above 600Mbps (ALL-Intra/ProRes/ProRes RAW) -- behind a specific VPG rating. Clears: Motion pictures (72 Mbps, no CFexpress class rating required); Motion pictures (200 Mbps, no CFexpress class rating required); Motion pictures (400 Mbps, no CFexpress class rating required); Motion pictures (600 Mbps, no CFexpress class rating required). Above 600Mbps, Panasonic requires a CFexpress card of any class -- no SD card of any class can record them -- and this card qualifies.
“Motion pictures with 72Mbps or less: CFexpress card, SD memory card with SD Speed Class with Class 10 or Video Speed Class 10 or higher Motion pictures with 200Mbps or less: CFexpress card, SD memory card with UHS-I / UHS-II UHS Speed Class 3 (U3) or Video Speed Class 30 or higher Motion pictures with 400Mbps or less: CFexpress card, SD memory card with Video Speed Class 60 or higher Motion pictures with 600Mbps or less: CFexpress card, SD memory card with Video Speed Class 90 Motion pictures with 800Mbps or more, variable frame rate with ALL-Intra, or ProRes: CFexpress card”
Last verified:
Compatibility inferred from spec rule (citations above are manufacturer-verified)