08/06/2026 9:37 pm
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Ive been shooting on Sony bodies since the original a7R days and usually I just grab whatever Sandisk or Sony Tough cards are on sale and call it a day but man this new a7R VI is a total beast when it comes to file sizes. I just got the body for my upcoming wedding season here in Chicago starting in May and the raw files are just eating through my storage and slowing down my buffer way more than the V ever did. I was out doing some test shots of the skyline yesterday and I hit the buffer limit after just a few bursts which is super frustrating when youre used to a certain flow.
Im trying to figure out if I actually need to bite the bullet and go full CFexpress Type A for both slots or if there are still some UHS-II V90 cards that can actually handle the write speeds for those high-res files without chugging. My budget is around 400 bucks for a couple of cards and I really dont want to waste money on something thats gonna bottleneck the sensor. Is anyone seeing a significant difference between the ProGrade Cobalt stuff and the Sony Tough series for this specific body? Or should I just give up on SD cards entirely for this resolution...
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08/06/2026 9:48 pm
I spent way too much time testing write speeds and honestly you dont need to go full Type A! The price-to-performance on some V90s is amazing. I found Kingston Canvas React Plus 256GB V90 SDXC sustains high bitrates way better than expected for UHS-II. Its a total hack for that sensor tho.
- Kingston Canvas React Plus 256GB V90 SDXC
- Angelbird AV PRO SD MK2 V90 128GB I love not burning my budget on storage!
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08/06/2026 10:42 pm
Quick reply while Im waiting for some files to export... Listen, just bite the bullet and go CFexpress Type A for at least your primary slot! I love my a7R bodies but those 61MP files are absolutely brutal on the buffer. If you check out the speed charts over at Alpha Shooters or Cameralabs, youll see why even the best V90 cards just cant keep up during a fast wedding sequence. I switched to the Sony CEA-G160T 160GB CFexpress Type A and the difference is literally night and day! The buffer clears almost instantly. Its fantastic for peace of mind when the bride is walking down the aisle and you cant afford a lockup. With your 400 dollar budget, you could snag a couple of Delkin Devices 160GB POWER CFexpress Type A cards and never worry about storage again. Dont settle for SD for this monster sensor, the Type A speed is a total game changer!
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08/06/2026 9:37 pm
> the raw files are just eating through my storage and slowing down my buffer way more than the V ever did. That high-resolution sensor is an absolute monster and those uncompressed raw files are massive! If you want to stop hitting that buffer wall, you really gotta jump to CFexpress Type A. Even the best UHS-II cards like the Sony TOUGH-G series SDXC UHS-II 128GB V90 usually hit a ceiling around 299MB/s write speeds. That sounds fast, but CFexpress Type A hits 700MB/s+ write speeds which is a total game changer for clearing the buffer. The buffer recovery speeds are amazing! I have been running the Sony CEA-G160T 160GB CFexpress Type A cards and the performance is incredible. The camera recovers almost instantly after a long burst. Since your budget is around 400, I would check out the ProGrade Digital CFexpress Type A Cobalt 160GB. They are fantastic and honestly perform just as well as the Sony ones in my experience. You get that top-tier reliability without the premium brand tax. Dont waste money on more V90 cards for your primary slot. Even the Lexar Professional 2000x 128GB SDXC UHS-II V90 will feel sluggish compared to Type A on a body with this much resolution. Switching to CFexpress is the best way to handle those Chicago weddings without the gear getting in the way... it makes the whole workflow feel so much more responsive. You are gonna love it!
