17/05/2025 8:14 pm
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Just upgraded to the Sony a7 IV and need advice on memory cards. The dual slots accept CFexpress Type A and SD UHS-II, but the price difference is huge.
I mainly shoot 4K video (sometimes 10-bit) and occasional bursts of RAW photos. Is the speed of CFexpress worth the premium cost, or would a good SD UHS-II card suffice?
Budget is around $150-200 for one card. Any specific brand recommendations with good reliability? Concerned about buffer clearing times and recording limits.
Thanks!
4 Answers
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17/05/2025 8:17 pm
CFexpress Type A is worth every penny if you're serious about video work. The buffer clearing is night and day compared to even the fastest SD cards.
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17/05/2025 8:16 pm
I've been using my a7 IV for about a year now, and honestly, a good SD UHS-II card is plenty for most shooting. I use the SanDisk Extreme PRO UHS-II V90 SD card and have zero issues with 4K video or burst shooting. The CFexpress Type A cards are blazing fast but unless you're shooting those long 10-bit 4K sequences constantly, it's hard to justify the cost difference. Save your money for glass!
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22/02/2026 3:32 am
Bump - same question here
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17/05/2025 8:18 pm
Whatever you do, don't cheap out on cards for the a7 IV. I learned this the hard way with a budget UHS-II card that corrupted during a wedding shoot. For your budget, look at the Angelbird AV PRO SD cards - they're around $150 for 128GB and perform almost as well as CFexpress for most real-world scenarios. Incredibly reliable too.
