The Sony a7S III (B&H Photo Video /Adorama/Amazon) is Sony’s latest best selling full frame mirrorless camera released in 2020. Sony a7S III can record 4K video at 120p. To max use of Sony a7S III, you’d better get fast memory cards for it. Sony a7S III has two card slots, both support UHS-II SD cards and CFexpress Type A cards. Here are top recommended SD cards and CFexpress Type A cards for Sony a7S III:
Recommended CFexpress Type A Cards for Sony a7S III:
Currently, only Sony has announced the new CFexpress Type A cards. You can get them for Sony a7S III:
| Card | Max. Read Speed | Max. Write Speed | Check Price |
| Sony Tough CFexpress Type A | 800 MB/s | 700 MB/s | Amazon/B&H/Adorama |
Recommended UHS-II SD Cards for Sony a7S III:
Sony a7S III’s SD card slots support UHS-II SD cards. So the best choice is to use UHS-II SD cards. Currently the fastest & toughest UHS-II SD memory card is Sony’s best selling SF-G UHS-II Tough SD card, this card has fastest read speed at 300 MB/s & write speed at 299 MB/s. You can take a look at recommended UHS-II SD cards for Sony a7S III below:
| Card | Max. Read Speed | Max. Write Speed | Check Price |
| Sony SF-G Tough UHS-II SDXC | 300 MB/s | 299 MB/s | Amazon/B&H/Adorama |
| SanDisk Extreme PRO UHS-II SDXC | 300 MB/s | 260 MB/s | Amazon/B&H/Adorama |
| Lexar Professional 2000x UHS-II SDXC | 300 MB/s | 260 MB/s | Amazon/B&H/Adorama |
| Hoodman Steel 2000x SDXC UHS-II | 300 MB/s | 260 MB/s | Amazon/B&H/Adorama |
| ProGrade Digital UHS-II SDXC | 300 MB/s | 250 MB/s | Amazon/B&H |
| Delkin Devices Power SDXC UHS-II | 300 MB/s | 250 MB/s | Amazon/B&H |
| Sony SF-M Tough UHS-II SDXC | 277 MB/s | 150 MB/s | Amazon/B&H/Adorama |
| Lexar Professional 1667x UHS-II SDXC | 250 MB/s | 90 MB/s | Amazon/B&H/Adorama |
Recommended UHS-I SD memory cards for Sony a7S III:
You can still use cheap UHS-I SD memory cards for Sony a7S III. Currently the fastest UHS-I SD card is from SanDisk, the SanDisk Extreme PRO UHS-I SDXC card has max read speed at 170MB/s and max write speed at 90MB/s. Take a look at recommended UHS-I SD cards for Sony a7S III:
| Card | Max. Read Speed | Max. Write Speed | Check Price |
| SanDisk Extreme PRO UHS-I SDXC | 170 MB/s | 90 MB/s | Amazon/B&H/Adorama |
| SanDisk Extreme UHS-I SDXC | 150 MB/s | 70 MB/s | Amazon/B&H/Adorama |
| Lexar Professional 633x UHS-I SDXC | 95 MB/s | 45 MB/s | Amazon/B&H/Adorama |
| PNY Elite Performance UHS-1 SDXC | 95 MB/s | – | Amazon/B&H/Adorama |
| Transcend UHS-I SDXC | 95 MB/s | 60 MB/s | Amazon/B&H/Adorama |