Best Memory Cards for Sony A7SIII

After a very long wait and many rumors surrounding the A7SIII, Sony finally introduced their new camera in late July of 2020. The camera features a 12MP full-frame sensor and when you take a short peek at the specs, you realize it was made with videographers in mind.

Sony A7SIII shoots 4K videos at up to 120 fps and 1080p at up to 240 fps! The camera also has amazing autofocus capabilities, a fully articulating touchscreen, dual memory card slots and much more. With that in mind, here are the best memory cards for Sony A7SIII.

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best memory cards sony a7siii
image source: Sony

Best CFexpress and SD Cards for Sony A7SIII

We should start off by letting you know that the A7SIII has two memory card slots. What’s interesting is the fact that each slot can accept both CFexpress Type A and UHS-II SD cards. As of the time of writing this article, the only CFexpress Type A memory cards that are available (for preorder at the moment) are the ones Sony introduced along with the A7SIII.

The new memory cards are necessary if you want to take full advantage of everything this camera has to offer but UHS-II cards are also a solid (and cheaper) choice, and they are good enough for nearly everything this camera can throw at it. This means that you should choose your memory cards depending on your specific needs and how you plan on using this camera. Alright, here are the best CFexpress Type A and UHS-II SD cards for Sony A7SIII.

CFexpress Type-A Cards:
Sony CFexpress Type A Memory Card CEA-G160T 160GB Up to 700 MB/s Up to 800 MB/s
UHS-II Cards:
Sony Tough-G Series SDXC 128GB UHS-II U3 Up to 299 MB/s Up to 300 MB/s
Lexar Professional 2000X 128GB SDXC UHS-II U3 Up to 260 MB/s Up to 300 MB/s
SanDisk Extreme Pro 128GB UHS-II U3 Up to 260 MB/s Up to 300 MB/s

Recommended Memory Cards for Video on Sony A7SIII

When it comes to 4K and 1080p video recording on the A7SIII, there are many modes to choose. Depending on the resolution, frame rate etc., you can pick many different codecs and bitrates. Some of them will work even with slow UHS-I cards. However, others, such the XAVC S-I 4:2:2 10-bit mode (600 Mbit/s or 75 MB/s), are extremely data hungry.

In short, if you plan on using this camera to its fullest potential, we’d go with a few CFexpress Type A cards, although V90 UHS-II SD cards (such as the Sony Tough UHS-II card found in the list above) are a decent option as well. If you plan on recording video using the most demanding codecs, we’d avoid using UHS-II cards that aren’t V90 compatible as this assures minimum continuous write speeds of 90 MB/s.


Sony A7SIII is an incredible mirrorless camera for videographers, although it can be used for social media photography and web publishing since you don’t need extremely high-resolution photos. We hope that this guide was useful and that we helped find the right memory card for your Sony A7SIII.

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