Best Memory Card for Sony a9

The Sony Alpha a9 is Sony’s flagship full frame mirrorless camera released in 2017. Sony a9 has a 24.2MP full-frame Exmor RS stacked CMOS sensor and BIONZ X image processor, capable of shooting at up to 20 fps, recording UHD 4K video internally, and shooting with an expanded sensitivity range to ISO 204,800. Sony a9 has two SD card slots, one support UHS-II SD memory cards, the other only support UHS-I SD memory cards. Here are recommended SD cards for Sony a9:

Recommended UHS-II SD memory cards for Sony a9:

To max use of Sony a9, you’d better use UHS-II SD memory cards. One of the Sony a9’s SD card slots is support UHS-II 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, the best UHS-II SD memory card for Sony a9. You can take a look at list below:

Card Max. Read Speed Max. Write Speed Check Price
Sony SF-G Tough UHS-II SDXC 300 MB/s 299 MB/s B&H/Adorama/Amazon
Sony SF-G UHS-II SDXC 300 MB/s 299 MB/s Amazon/B&H/Adorama
Lexar Professional 2000x UHS-II SDXC 300 MB/s 260 MB/s Amazon/B&H/Adorama
SanDisk Extreme PRO 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 B&H/Adorama
Angelbird AV Pro UHS-II SDXC 300 MB/s 260 MB/s Amazon/B&H/Adorama
Delkin Devices Cinema SDXC UHS-II 280 MB/s 250 MB/s Amazon/B&H/Adorama
Sony M Series UHS-II SDXC 260 MB/s 100 MB/s B&H/Adorama
Lexar Professional 1000x UHS-II SDXC 150 MB/s 75 MB/s Amazon/B&H/Adorama
Recommended UHS-I SD memory cards for Sony a9:

The other SD card slot support UHS-I SD memory card. UHS-I SD memory cards are usually much cheaper than UHS-II cards. Currently the fastest UHS-I SD memory cards are from SanDisk (Max Read Speed at 170 MB/s) and Sony, both has max. write speed at 90 MB/s. Take a look at recommended UHS-I SD memory cards for Sony a9:

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
Sony UHS-I SDXC 95 MB/s 90 MB/s Amazon/B&H/Adorama
Delkin Devices Elite UHS-I SDHC 95 MB/s 80 MB/s Amazon/B&H/Adorama
Sony High Speed UHS-I SDXC 90 MB/s 70 MB/s Amazon/B&H/Adorama
Transcend UHS-1 SDXC 95 MB/s 60 MB/s Amazon/B&H/Adorama