Panasonic Lumix S1R
The Lumix S1R is one of the first full frame mirrorless cameras from Panasonic, announced during photokina 2018. Being equipped with a 47 Megapixel sensor including a 187 MP high-res mode for still-life, in-body image stabilization and 4K-Video with up to 60 fps, the Lumix S1R offers an interesting combination of photo and video capabilities!
The Panasonic Lumix S1R offers two memory card slots - one each for SD and XQD memory cards. Even though XQD cards are your best bet for maximum speed, much cheaper SD memory cards with U3/V30 speed class are perfectly fine to record 4K video. Furthermore the fastest UHS-II capable SD memory cards are just about 15-20% slower than the fastest XQD card.