yo, honestly i had some issues with cheap cards when i first started vlogging on my ZV-1F and it was literally the worst. i bought this generic brand and it kept giving me 'card speed' errors right in the middle of a cool sunset shot... so disappointing!! i guess i learned the hard way that you cant cheap out too much. since ur shooting 100Mbps 4K, u basically just need a solid V30 card. Here is how I’d compare the ones I’ve tried: Option A: SanDisk 128GB Extreme PRO SDXC UHS-I Card V30 U3
Pros: it’s the gold standard, super reliable.
Cons: honestly a bit overpriced just for the brand name. Option B: Samsung 256GB EVO Select microSDXC UHS-I Card with SD Adapter
Pros: crazy cheap price for the capacity.
Cons: i had issues with the adapter failing once... kinda sketch for long trips. Option C: Kingston 128GB Canvas Go! Plus SDXC UHS-I V30
Pros: best value for the tech specs imo. tbh, I think the Kingston is the best choice for the ZV-1F. it’s fast enough for that 4K bitrate but wont break the bank like the SanDisk might. anyway, gl with the vlogs! peace

For your situation, basically don't waste your cash on those fancy UHS-II cards. The Sony ZV-1F hardware literally only has a UHS-I slot, so even if u buy a card with those extra pins on the back, the camera wont be able to use them. You'll just be paying double for speed that you'll only see when transferring files to your computer, not while filming. To hit that 100Mbps 4K bitrate without the camera throwing a fit, u just need to make sure the card is rated V30 or U3. If u go with a V10 or a basic Class 10 card, it'll definitely buffer or just stop recording mid-take... which is honestly the worst when you're in the middle of a travel vlog. Here's what I recommend based on what I've been using: * SanDisk 128GB Extreme PRO SDXC UHS-I Card V30 U3: This is my go-to. It's super reliable and honestly the industry standard for a reason. I've never had a 'card speed' error with these.
* Samsung PRO Plus 256GB microSDXC UHS-I V30: This is lowkey the best value. It's usually cheaper than SanDisk and I use it with the included adapter. Works flawlessly for long 4K sessions.
* Sony SF-E Series 128GB SDXC UHS-II Card V60: I'd be careful with this one. It's a great card, but for the ZV-1F, it's total overkill. You're paying for V60 speeds the camera can't even touch... wait no, I mean it works fine, it's just a waste of money imo. Basically, just stick to a solid V30 UHS-I card and spend the extra money on a better mic or extra batteries! gl!

Yeah, everyone basically nailed the technical side already. Since the ZV-1F is capped at UHS-I, ur definitely smart for not overpaying for UHS-II cards. Just to recap the main vibe here: stick to V30 or U3 ratings to handle that 100Mbps stream, and always verify your capacity so you dont get scammed. I did some digging into current market options that havent been mentioned yet, and there are a couple of solid alternatives if you want to compare brands beyond the basic ones.

• Samsung PRO Plus SDXC Full Size SD Card

Pros: Samsung actually manufactures their own NAND flash and controllers, which usually leads to better long-term stability and fewer errors during high-bitrate recording. Tbh, their write speeds are super consistent for 4K.
Cons: They can sometimes be slightly more expensive than budget brands, and the blue casing is easy to lose if you drop it in the grass lol.

• Lexar Professional 1066x SDXC UHS-I Card Silver Series

Pros: These are optimized for high-speed read/write performance within the UHS-I spec. If you have a matching Lexar reader, you can offload your travel vlogs to your laptop really fast.
Cons: Lexar has had some QC fluctuations in the past since their ownership change, though the Silver series is usually pretty reliable.

• ProGrade Digital SDXC UHS-I Video Speed Class 30

Pros: These guys are ex-Lexar engineers and they focus heavily on professional-grade reliability. Their cards are rigorously tested, which might give you more peace of mind while traveling.
Cons: Harder to find in physical stores, so you basically have to order them online. Honestly, as long as you avoid the super cheap generic stuff and stick to a reputable brand with a V30 rating, you shouldnt see any buffering. The 100Mbps bitrate only translates to about 12.5MB/s, so a V30 card (which guarantees 30MB/s) gives you plenty of headroom for smooth filming.

OMG you are gonna have such an amazing time with the ZV-1F! I love mine so much and the video quality is just fantastic! But real quick, how many hours of footage are you planning to dump onto a single card at once? That really changes how much I would stress about the brand choice because heat and reliability become a huge deal during long shoots. Honestly, there are some fantastic resources already out there if you want to compare the big brands like SanDisk or Samsung side-by-side:

• Search YouTube for ZV-1F speed test because there is a killer video that shows the real-world bitrates
• The Sony official site has a compatibility list that is super helpful for safety
• Check the Sony Alpha subreddits for user experiences I found a really amazing guide on a tech blog yesterday that compared every single major brand for this specific camera model. Just Google best v30 cards for Sony ZV-1F and it should be like the first or second result that pops up!

Ngl speed is one thing but reliability is what really matters when you're traveling and can't just reshoot a moment!! I’ve seen way too many people lose footage because they bought a card from a shady seller. My biggest tip is to never just start shooting on a new card straight out of the box... always run a test first. Download a free tool called H2testw (or F3 for Mac) to verify the card's actual capacity and speed because there are so many fakes floating around online these days that look identical to the real thing. If you want a solid alternative to the usual brands, I’ve had zero issues with the Samsung PRO Plus SD Full Size SDXC or the Kingston Canvas Go! Plus SDXC. Both are super reliable V30 cards that handle that 100Mbps bitrate without breaking a sweat. Also, a quick pro-tip: try not to fill your card up to the literal last GB!!! Keeping about 10% of the space free helps prevent the controller from slowing down or causing write errors mid-vlog. Just format it in-camera every time you clear your footage and you'll be golden.