@Reply #3 - good point! I actually spent ages obsessing over this when I first got my X-T30 II because losing photos is my absolute worst nightmare! I once had a cheap card corrupt on a trip to the mountains and it was totally heartbreaking losing all those memories... literally wanted to cry lol. Now I'm super careful and only use stuff thats rated for tough conditions.

• Get the Samsung PRO Plus 128GB SDXC UHS-I V30. I love it because its water and temperature proof which gives me such peace of mind!
• Grab two 128GB cards instead of one giant one. If a card fails, you dont lose everything you shot that week. Honestly, the speed on these is fantastic for the 4K video and they feel so reliable. Its such an amazing little camera, you're gonna have a blast with it!

Regarding what #3 said about "Great info, saved!" - yeah, knowing the bus interface limits is key. Since the X-T30 II doesnt even have the pins for UHS-II, youll never get those 300MB/s speeds anyway. V30 is the technical standard you need to keep up with that 200Mbps 4K bitrate. Heres how the tech stacks up across different brands in my experience:

• Kingston: typically uses solid controllers that handle heat well in these small bodies
• Lexar: performance varies a bit more between their different production batches
• Sony: high reliability and build quality but you're mostly paying a premium for the name I usually lean toward whatever has the best warranty honestly. The camera hardware is the bottleneck here, not the card, so just get a reliable brand and dont overthink it.

Late to the party but gotta chime in because I've actually been pretty disappointed with the big name brands lately. Everyone says SanDisk is the gold standard but unfortunately, I've had two of their newer cards start delaminating on me after just a few months... super annoying when you're mid-shoot. They just weren't as good as expected for the premium price. I ended up grabbing the Kingston Canvas Go! Plus 128GB SDXC UHS-I V30 on a whim and honestly, it’s been way more reliable for way less money. It handles the 4K video on my X-T30 II without breaking a sweat. Quick tip tho

• I usually buy a couple of 64GB cards instead of one huge 128GB or 256GB. It's way less of a disaster if a card fails or you lose it while traveling. Just swap em out periodically.

X-T30 II currently not supports UHS-II SD cards, so get a fast UHS-I SD is enough, for example: SanDisk Extreme Pro UHS-I V30

Helpful thread 👍

Great info, saved!

Any UHS-I V30 cards are OK for X-T30II.