The Sony A7R IV is a 61 megapixel full-frame mirrorless camera that features dual memory card slots.
Each memory card slot supports SD/SDHC/SDXC (UHS-II / UHS-I) memory cards.
For photographers shooting still images an SDXC V60 rated UHS-II card is all you really need. If you shoot action and continuous bursts then a SDXC V90 rated UHS-II card will clear the buffer much faster. Faster cards also enable faster transfers to your computer and handle the large 61 mp files better.
For videographers a V30 rated UHS-I SDHC/SDXC card will allow you to shoot 4K 100 Mbps. If you only want to record HD 60Mbps then a SDHC/SDXC V10 is all you really need. However, we would recommend an SDXC V60 UHS-II card at minimum to enable faster transfer time to your computer, especially if you are also shooting images.
Recommended UHS-II SDXC Cards
Our top recommended UHS-II SDXC cards based on speed and reliability for the Sony A7R IV are:
| UHS-II Card | Max Write Speed | Max Read Speed | Video Speed Class |
|---|---|---|---|
| Delkin Devices Power | 250 MB/s | 300 MB/s | V90 |
| Delkin Devices BLACK | 250 MB/s | 300 MB/s | V90 |
| Angelbird AV PRO SD (MK2) | 280 MB/s | 300 MB/s | V90 |
| Nextorage NX-F2PRO | 299 MB/s | 300 MB/s | V90 |
| SanDisk Extreme Pro | 300 MB/s | 300 MB/s | V90 |
| Sony SF-G Tough | 299 MB/s | 300 MB/s | V90 |
| Lexar Professional GOLD 2000X | 260 MB/s | 300 MB/s | V90 |
| OWC Atlas Ultra | 250 MB/s | 300 MB/s | V90 |
| Lexar Professional GOLD 1800x | 210 MB/s | 280 MB/s | V60 |
| Nextorage NX-F2SE Series | 100 MB/s | 280 MB/s | V60 |
FAQs
What is the difference between UHS-I and UHS-II memory cards?
UHS-II offers much faster speeds (up to 312 MB/s) compared to UHS-I (up to 104 MB/s). This is possible via a second row of pins and two data lanes for simultaneous upstream and downstream data transfer. The extra row of pins are visible on the back of UHS-II cards. Both card types are backward compatible, but a UHS-II card will only operate at UHS-I speeds in a camera that only supports UHS-I cards.
What is the difference between SDHC and SDXC memory cards?
SDHC cards are formatted using the FAT32 file system which is limited to a maximum file size of 4GB. So when recording video clips, the clip will be split every 4 GB but playback with the camera will be seamless. SDXC cards use the exFAT file system which supports a maximum file size of 16 exabytes (EB), so video clips will not be split. SDHC cards support capacities of between 2-32GB and SDXC cards support 64GB-2TB.
Are CFexpress Type A cards compatible with the A7R IV?
No. The Sony A7R IV is not compatible with the CFexpress Type A cards, only SD/SDHC/SDXC (UHS-II/UHS-I) cards are supported.
Where can I find the Sony A7R IV specifications?
The Sony A7R IV specifications can be found on DPReviews's website.
