Best CFexpress cards and SD memory cards for Sony a7 IV mirrorless camera. Here is the guide for you to get the top recommended & CFexpress cards and SD cards for Sony a7 IV.
The Sony a7 IV has dual memory card slots: The card slot 1 supports both the fast CFexpress Type A cards and the UHS-II SD cards while the card slot 2 is only compatible with UHS-II SD cards. In addition, the Sony a7 IV features many of Sony’s most advanced imaging technologies, including the latest BIONZ XR processing engine and advanced AF (autofocus) capabilities from the flagship Sony a1 combined with streamlined operability and enhanced reliability for photos and movies, making it the perfect all-around camera for today’s imaging enthusiasts and professionals. So, with advanced AI-based autofocus, evolved movie technologies and greater streaming and sharing functionality, the Sony a7 IV is a well-rounded camera suitable for all kinds of photography.
As mentioned above, the Sony a7 IV (Amazon, B&H, Adorama) has 2x memory card slots: 1 x CFexpress Type A / SD (UHS-II) card slot and 1 x UHS-II SD card slot. Although SD cards and CFexpress Type A cards are not the same in size, the Sony a7 IV card slot 1 will accept either card type. If you want to get ultra high read speeds (transfer speed) and write speeds (fast buffer clearing time) to get the best out of your Sony a7 IV camera, here we list the top recommended & fastest CFexpress Type A cards and SD cards for the Sony a7 IV mirrorless camera based on the speed and price.
Best CFexpress Cards (Type A) for Sony a7 IV
The Sony a7 IV card slot 1 supports both the fast CFexpress Type A cards and the UHS-II SD cards. When it comes to CFexpress Type A cards, the choices are very limited. Currently, the Sony TOUGH CFexpress Type A card and ProGrade Digital Cobalt CFexpress Type A card are the only two choices on the market.
Both the Sony TOUGH CFexpress Type A card and ProGrade Digital Cobalt CFexpress Type A card provides the same read speeds of up to 800 MB/s, which helps to quickly offload content to your computer, and write speeds of up to 700 MB/s, greatly reducing buffer clearing times. This quick performance benefits recording a variety of video resolutions, bit-rates, and compressions, as well as high-resolution continuous raw photo shooting. Additionally, the Sony TOUGH memory card also has a reinforced physical design to withstand falls from up to 15′ and has been rigidity tested to 70 N of force, while the ProGrade Digital Cobalt’s minimum write speed is guaranteed not to drop below 400 MB/s, which allows for the uninterrupted recording of a wide variety of codecs, including raw 4K video, 4K and 6K ProRes 4444, 4K, 6K, and 8K ProRes 422 HQ, and more. Below are the top recommended CFexpress Type A cards for the Sony a7 IV mirrorless camera.
| CFexpress Card | Max. Read Speed | Max. Write Speed |
| Sony 160GB TOUGH CFexpress Type A Card | 800 MB/s | 700 MB/s |
| Sony 80GB TOUGH CFexpress Type A Card | 800 MB/s | 700 MB/s |
| ProGrade Digital 160GB Cobalt CFexpress Type A Card | 800 MB/s | 700 MB/s |
| Sony MRW-G2 CFexpress Type A/SD Card Reader | — | — |
Best UHS-II SD Cards for Sony a7 IV
Both Sony a7 IV card slots are compatible with the UHS-II SD cards. Speaking of the UHS-II SD cards, the Sony SF-G Tough UHS-II SD Card (V90), Kingston Canvas React Plus UHS-II SD Card (V90), ProGrade Digital UHS-II SDXC Card (V90), Delkin Devices Power UHS-II SDXC Card (V90) and Lexar Professional 2000x UHS-II SD Card (V90) are top five fastest and the most popular UHS-II SD cards on the market.
The Sony SF-G Tough Series UHS-II SD card is currently the world’s fastest SD memory card on the market and the top choice for you. Offering maximum read speeds of up to 300 MB/s and maximum write speeds of up to 299 MB/s, the Sony SF-G Tough UHS-II SD Card is well-suited for video capture, including 8K, 4K XAVC S, 60p AVCHD, 3D, HFR, and Full HD video, as well as super fast continuous shooting. In addition, thanks to its V90 speed class rating, minimum write speeds are guaranteed not to drop below 90 MB/s.
In addition, the Kingston Canvas React Plus UHS-II SD Card is another great choice and great value SD card for shooting 8K, 4K, and Full HD video, as well as high-resolution photos. Besides, the ProGrade Digital UHS-II SDXC Card (V90) and the Delkin Devices Power UHS-II SDXC Card (V90) are two of the most popular SD cards with an affordable price on the market! If you need some fast and reliable UHS-II SD cards without spending too much (like Sony SF-G Tough UHS-II SD Card), these two cards are the perfect choice for you. If you need some budget choice, you can also consider the Sony SF-M Tough UHS-II SD Card (V60) and the ProGrade Digital UHS-II SD Card (V60). Below are the top recommended UHS-II SD cards for Sony a7 IV mirrorless camera based on the speed and price.
| UHS-II SD Cards | Max. Read Speed | Max. Write Speed |
| Sony SF-G Tough UHS-II SD Card (V90) | 300 MB/s | 299 MB/s |
| Kingston Canvas React Plus UHS-II SD Card (V90) | 300 MB/s | 260 MB/s |
| ProGrade Digital UHS-II SDXC Card (V90) | 300 MB/s | 250 MB/s |
| Delkin Devices Power UHS-II SDXC Card (V90) | 300 MB/s | 250 MB/s |
| Delkin Devices BLACK UHS-II SDXC Card (V90) | 300 MB/s | 250 MB/s |
| Lexar Professional 2000x UHS-II Card (V90) | 300 MB/s | 260 MB/s |
| SanDisk Extreme PRO UHS-II SD Card | 300 MB/s | 260 MB/s |
| Hoodman Steel 2000x SDXC UHS-II Card | 300 MB/s | 260 MB/s |
| Sony SF-M Tough UHS-II SDXC Card (V60) | 277 MB/s | 150 MB/s |
| ProGrade Digital UHS-II SDXC Card (V60) | 250 MB/s | 130 MB/s |
| Sony SF-E Series UHS-II SDXC Card (V60) | 270 MB/s | 120 MB/s |
| Lexar Professional 1667x UHS-II SD Card (V60) | 250 MB/s | 90 MB/s |
