Launched in 2018, the Sony A7III is a professional camera featuring two memory card slots for dual recording. If you’re wondering what is the best SD card for the Sony A7III and what its specifications are, I have answers to all your questions.

In this post, you’ll find a list of my seven top picks for the best SD cards for the Sony A7 III and their main characteristics.


Sony TOUGH-G Series

Sony TOUGH-G series SDXC UHS-II Card 128GB, V90, CL10, U3, Max R300MB/S, W299MB/S (SF-G128T/T1)
  • Tough specs: world's first one-piece molded construction with high hardness materials...
  • Ribless, no write protection switch design: world's first ribless, no write...
  • Fast file transfer: up to 300 MB/s transfer speed and up to 299MB/s write speed 3....

Recommended by Sony for its A7 III camera, the Sony TOUGH-G Series memory card is, arguably, the best SD Card out there that you can get for your Sony A7III.

Write Speed

The Sony Tough-G Series SD card offers a blazing fast 299 MB per second maximum write speed. The minimum guaranteed write speed that you get with this card is 90 MB per second, which is pretty great. But, what does this speed mean?

Well, higher write speeds mean faster card performance in terms of saving videos and photos. For example, this memory card is capable of clearing the Sony A7 III’s buffer in less than ten seconds if you have 60 shots of uncompressed raw photos. And, when it comes to videos, it lets the camera perform at an average of 147 MB per second. Such speeds are more than enough for shooting 4k/60 fps videos.

Overall, the card definitely performs superbly well when it comes to write speeds. Therefore, if you have the budget for it, then you should definitely get it.

Read Speed

Read speed is also an important factor to consider when buying an SD card for your camera. A good read speed means that you’ll be able to transfer photos and videos from your camera’s memory card to your computer at a fast pace. It’s really important for professional photographers who do post-processing of videos and don’t want to wait for hours just for transferring the videos.

The Sony TOUGH-G series memory card offers a pretty good write speed of up to 300 MB per second. When tested in the Sony A7 III, it took 2 minutes and 32 seconds to transfer a 20GB folder with photos. It means, in the real-world scenario, you get a transfer speed of 148 MB per second with this SD card.

Therefore, if you value your time and don’t want to waste it on slow file transfers, then you should definitely consider buying the Sony TOUGH-G series memory card.

Available SD Card Capacity

The Sony TOUGH-G is available in the following storage variants:

  • 32 GB
  • 64 GB
  • 128 GB

Now, you must have noticed that the card doesn’t offer a lot of storage options,  which is a bit disappointing. But, you can use two 128 GB memory cards for a larger storage capacity since the Sony A7 III has two SD card slots.

Why Tough-G is the best SD card for Sony A7III

The biggest and the most obvious reason for recommending Sony Tough-G with Sony A7 III camera is that both the products are produced by Sony. This makes them fully compatible.

Other reasons include the high performance and durability offered by this SD card. So, if you want high performance and full compatibility with your camera, and are not concerned about the price, then you should definitely go for the Tough-G SD card for your A7 III.

But, if you’re looking for cheaper options that offer decent performance too, then you should check out the list below.


Recommended SD Cards for Sony A7III

Apart from the Sony TOUGH-G, here are a few more memory cards that perform well on your Sony A7 III, and are cheaper too.

SanDisk Extreme Pro UHS-II

The SanDisk Extreme Pro UHS-II SD card offers 300 MB/s transfer speed and write speeds of up to 260 MB/s. It is available on the following storage options:

  • 32 GB
  • 64 GB
  • 128 GB

Lexar Professional 2000X UHS-II (300/260)

Lexar Professional 2000x 64GB SDXC UHS-II Card (LSD64GCBNA2000R)
  • High-speed performance leverages UHS-II technology (U3) for a read transfer speed up...
  • Captures high-quality images and extended lengths of stunning 1080p full-HD, 3D, and...
  • Includes SD UHS-II reader for high-speed file transfer from card to computer,...

Lexar Professional UHS-II SD Card supports 4k videos and offers transfer speeds of up to 300 MB/s. It is available on the following storage capacity variants:

  • 32 GB
  • 64 GB
  • 128 GB


Sony M Series SDXC UHS-II Card 64GB, V60, CL10, U3, Max R277MB/S, W150MB/S (SF-M64/T2), Black
  • Works with free File Rescue software to save compromised data
  • 4K Video Compatible
  • Read speed up to 260MB/s, Write speed of 100MB/s

The Sony SF-M UHS-II is another good SD card from Sony. It has a maximum transfer speed of 277 MB/s and a 150 MB/s write speed. You can get this SD card on the following storage capacities:

  • 32 GB
  • 64 GB
  • 128 GB
  • 256 GB

ProGrade V90 UHS-II

ProGrade Digital SDXC UHS-II V90 300R Memory Card (64GB)
  • SPEED: 300 MB/s Read, Up to 250MB/s Write, UHS-II, U3 Speed Class
  • UNPARALLELED QUALITY: Rigorous 100% card testing for highest quality assurance....
  • COMPATIBILITY: Canon, Sony, Nikon, Olympus, Panasonic, Fuji, Samsung

The ProGrade V90 memory card offers a read speed of up to 300 MB/s. It is rated at V90 and its write speeds are able to reach up to 250 MB/s. Following storage options are available for the ProGrade V90 UHS-II SD Card:

  • 64 GB
  • 128 GB
  • 256 GB

Transcend SD 700S UHS-II

Transcend TS32GSDC700S 32GB UHS-II U3 V90 SDHC Flash Memory Card
  • Transcend SDXC/SDHC 700S Memory cards are manufactured with top-tier MLC NAND flash...
  • Transcend SDXC/SDHC 700S Memory cards meet both the UHS-II speed Class 3 (U3) and the...
  • Transcend SDXC/SDHC 700S Memory cards allow for thousands of photos and hours of full...

Transcend 700S provides a 285 MB/s read speed and a 180 MB/s maximum write speed. It’s available on the market in the following storage variants:

  • 32 GB
  • 64 GB

Sony Expert Series UHS-I

Sony 32GB Class 10 UHS-1 SDHC up to 70MB/s Memory Card (SF32UY2)
  • Up to 70 MB/s transfer speed
  • File Rescue downloadable software helps recover photos and videos that have been...
  • UHS-I memory cards have been tested to achieve high levels of reliability and data...

The Sony Expert memory card is capable of reaching up to 94 MB/s when it comes to read speed. It offers a pretty decent 70 MB/s write speed. This SD card is available on the following storage capacities:

  • 8 GB
  • 16 GB
  • 32 GB
  • 64 GB
  • 128 GB
  • 256 GB


Sony A7III SD Card Specifications

The Sony A7 III features two card slots. It supports up to UHS-II rated SD cards. Therefore, in order to maximize the camera’s performance, you should get a UHS-II SD Card. Also, bear in mind that the card you choose should offer a well-rounded performance in terms of read and write speeds.

You can also use UHS-I cards with this camera, but they will work slower when compared to the UHS-II ones. The camera buffer will also take significantly more time and you might miss some important shots.

Recommended SD Card Specs for Sony A7III:

  • Card Type: SD Card
  • Speed Class Rating: UHS-II
  • Size: Up to 1TB

Remember that for making 4k videos you’ll need a fast SD card. Find what are the speed recommendations in the following article: Sony a7III SD Card Speed Recommendation for 4k Videos.

And for more details on SD card specs consult: Sony a7III SD Card: Recommended Size, Specs, Price.


Which SD Card Would You Choose?

As I’ve clearly mentioned above, the Sony a7 III works best with the Sony TOUGH-G Series SD card. This SD card is recommended by Sony for its camera. So, if the price is not a concern for you, and you want high performance and fully compatible SD card with your A7 III camera, then the Tough-G SD card is for you.

However, if you want a reasonably priced, fast-speed SD card that generally works work with all the devices, including the Sont A7 III, then the SanDisk Extreme Pro UHS-II SD card is a great choice too.

Don’t miss full list of the 8 best accessories for your Sony a7III>>>

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Thanks for reading!

I hope this guide helped you learn about some of the best SD card options for your Sony A7 III camera 🙂 


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