Best Memory Cards for Sony a7S III

The Sony a7S III (B&H/Adorama/Amazon) is Sony’s latest professional full frame mirrorless camera released in the second half of 2020. Sony a7S III has two memory card slots, both support UHS-II SD memory cards and much faster CFexpress Type A memory cards. In order to max use of Sony a7S III, for example, shooting 4K videos, you’d better get fast memory cards for Sony a7S III. Below are top rated CFexpress Type A memory cards and SD memory cards for Sony a7S III:

Best CFexpress Type A Card for Sony a7S III:

As Sony said, CFexpress Type A cards are ideally suited to high-speed continuous RAW still image shooting as well as 4K 120pi movie recording at high bit rates. If you are going to shoot 4K videos, CFexpress Type A cards are best choice for a7S III. These cards has max read speed at 800MB/s, and max write speed at 700MB/s.

Card Max. Read Speed Max. Write Speed Check Price
Sony Tough CFexpress Type A 800 MB/s 700 MB/s Amazon/B&H/Adorama
Best UHS-II SD Cards for Sony a7S III:

Other than CFexpress Type A cards, the best memory card choice for Sony a7S III is UHS-II SD memory 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
Best UHS-I SD memory cards for Sony a7S III:

The UHS-I SD memory cards are much cheaper than CFexpress and UHS-II SD cards. 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