Quickly adding my two cents before you pull the trigger. Having owned the FX30 since launch, I’ve realized that managing ur budget is just as important as the gear itself. Summarizing what everyone’s said: V60 is the value king, V90 is the safety pick, and CFexpress is for the "no compromises" crowd. Here is my experienced take on the long-term play: 1. **Know your Codecs:** Unless you’re shooting XAVC S-I (All-Intra), you dont actually need V90/CFA. Most 4K 120p fits on V60. Saving money here lets you buy better glass.
2. **Reliable Budget Choice:** I've had great luck with ProGrade Digital SDXC UHS-II V60 Gold cards. They’re super stable and usually cheaper than the big names mentioned earlier.
3. **The Redundancy Rule:** Buy two smaller cards instead of one giant one. If one card gets corrupted (its happened to me, lol), your not losing the whole shoot.
4. **Best Value V90:** If you want that peace of mind for S-Log3 and high frame rates without the CFexpress price tag, Kingston Canvas React Plus V90 is usually way cheaper than the Sony cards. Honestly, just grab a solid V60 and spend the savings on extra batteries—you’ll need them more!

Nice, didn't know that

Can vouch for this

honestly i was so scared of losing footage when i got mine too. i spent like hours looking at the official sony compatibility charts in the manual because i didnt want to mess anything up. if ur really worried about that 4K 120fps stuff and want the safest bet without worrying about errors, maybe look into CFexpress Type A? i know they are pricey but i picked up a Lexar Professional CFexpress Type A Card Gold Series and it makes me feel way safer than regular SD cards. basically it lets u use every single setting without the camera ever throwing an error, especially for those high bitrates. i also looked at the ProGrade Digital SDXC UHS-II V90 Gold cards which seem really solid if u want to stick to SD. just a tip from one beginner to another—always remember to format the card in the camera itself every time u start a new shoot. i do that every single time cuz im paranoid about file corruption and stuff, and it's a good habit to keep things running smooth. id rather be safe than sorry with my files tbh!

So congrats on the FX30, its a beast of a camera. Before I give you a solid recommendation tho, I gotta ask: are you planning to do dual recording (writing to both cards at once) for professional stuff? That is a huge factor because it puts more strain on the bus and requires perfectly matched cards to avoid buffer errors. From a technical compatibility perspective, if you want to use the XAVC S-I (All-Intra) codec at high frame rates, you realy need to be careful with the sustain speeds. Here are two options that havent been mentioned yet:

• Sabrent Rocket V90 SDXC UHS-II - these are great for the price and meet all the technical specs for All-Intra without the usual markup.
• Nextorage B1 Pro CFexpress Type A
• Nextorage was basically started by former Sony engineers, so the compatibility is basically perfect for the FX30. I generaly tell people to avoid the absolute cheapest V60s for 4K 120fps because even if they work at first, they can thermal throttle during long takes. For a full day of shooting, definately dont go smaller than 128GB, but two 160GB or 256GB cards is the sweet spot for 4K S-Log3.

Hey there! Congrats on the FX30 – you're gonna love it! I totally get the memory card anxiety; it's a real thing, haha. So, here's my take after using Sony cameras for… well, let's just say a *long* time (we're talking almost a decade now, yikes!).

For your situation – 4K, 120fps slow-mo, and S-Log3 – I'd lean towards recommending **Angelbird AV Pro V60 cards**. Now, before everyone jumps on the V90 bandwagon, hear me out. I've personally found that the FX30 plays really well with these cards, and they consistently deliver reliable performance without breaking the bank. I even bought some expensive ProGrade V90s a while back and, unfortunately, had issues with dropped frames in certain modes – a total bummer!

Specifically, I've had good luck with the 128GB and 256GB versions of the Angelbird AV Pro V60. They seem to handle the data rates just fine for most shooting scenarios. And honestly, unless you're doing *EXTREME* bitrate stuff constantly, I haven't seen a huge real-world benefit from V90s *for 4K.* Plus, you can buy more of them for the price.

As for card size, a 128GB card will get you through a decent amount of shooting, but honestly, for a full day, I'd recommend at least two 256GB cards. It's always better to have more space than you think you'll need! I learned that the hard way on a shoot a few years ago when I ran out of space halfway through the day. Never again!

Hope this helps! Let me know if you have any other questions – happy to share any other lessons I've learned the hard way over the years!

Hey! Yeah, the FX30 card situation can be a bit of a rabbit hole. While V90 cards are the 'safest' bet, I've found that *carefully chosen* V60 cards can work just fine for most 4K scenarios, saving you some cash.

Specifically, I've had consistent success with the SanDisk Extreme Pro V60 cards (the 256GB ones are usually around $40-$50). The key is to make sure they consistently maintain *at least* 200MB/s write speed, which is usually more than enough for the FX30's 4K recording, even at higher frame rates. I'd run some tests to be absolutely sure.

For a full day, I'd recommend at least 256GB, maybe even 512GB, depending on how much you plan to shoot. I usually carry a few 256GB cards. I haven't had any dropped frames or recording issues with this setup shooting 4K/24p and S-Log3. Hope this helps!

Hey! Congrats on the FX30! I totally get the card confusion – it's easy to overspend. While V90s are the 'safest,' they can be pricey. In my experience, unless you're doing *constant* 120fps 4K S-Log3, you can often get away with carefully chosen V60 cards AND save some cash.

I've been using SanDisk Extreme Pro V60 cards (128GB) for a couple of years now with my Sony cameras and they've been surprisingly reliable for most 4K work. Just make sure they're the *UHS-II* versions. For a full day, I'd recommend at least two 128GB cards, maybe even a third for peace of mind. I'd recommend doing some test recordings to see how much space your typical shooting style uses.

I hope this helps!

Hey! I get your concerns about card reliability; it's super important! I lean towards a 'better safe than sorry' approach. While others mentioned V60s *might* work, I'd personally stick with V90 cards for guaranteed compatibility with ALL FX30 recording options, especially S-Log3 and 4K 120fps!

Specifically, I love the Sony Tough series V90 cards – they're super durable! Also, aim for at least 128GB cards; you'll be surprised how fast you fill them up, especially with high frame rates! I'd hate to lose a shot because of a card issue. So for peace of mind, V90 is the way to go! Let me know if you want specific model numbers!