The Canon EOS R3 (B&H/Adorama/Amazon) is Canon’s newest high-end full frame mirrorless camera coming in the second half of 2021. Like Canon EOS R5, EOS R3 has two memory card slots, one is CFexpresss Type B card slot, the other is SD card slot supports UHS-II SD cards. Looking for recommended memory cards for Canon EOS R3 ? We have tested and reviewed latest memory cards, and below are top recommended ones for Canon EOS R3:
Recommended CFexpress memory cards for Canon EOS R3:
One of the Canon EOS R3’s card slots is CFexpress card slot, supports world’s fastest CFexpress Type-B memory cards. Currently, the fastest and toughest CFexpress card is Sony Tough CFexpress Type-B, it has max read speed at 1,700MB/s, and max write speed at 1,480MB/s. See the details below:
| Card | Max. Read Speed | Max. Write Speed | Check Price |
| Sony Tough CFexpress Type-B | 1,700 MB/s | 1,480 MB/s | Amazon/B&H/Adorama |
| SanDisk Extreme Pro CFexpress | 1,700 MB/s | 1,400 MB/s | Amazon/B&H/Adorama |
| Delkin Devices CFexpress | 1,700 MB/s | 1,400 MB/s | Amazon/B&H/Adorama |
| Wise Advanced CFX-B Series CFexpress | 1,700 MB/s | 1,050 – 1,550 MB/s | Amazon/B&H/Adorama |
| Hoodman Steel CFexpress | 1,700 MB/s | 1,400 MB/s | Amazon/B&H/Adorama |
| ProGrade Digital CFexpress 2.0 Cobalt | 1,600 MB/s | 1,400 MB/s | Amazon/B&H/Adorama |
| Lexar Professional CFexpress Type-B | 1,750 MB/s | 1,000 MB/s | Amazon/B&H/Adorama |
| ProGrade Digital CFexpress Type-B Gold | 1,600 MB/s | 1,000 MB/s | Amazon/B&H/Adorama |
Recommended UHS-II SD memory cards for Canon EOS R3:
For the SD card slot, Canon EOS R3 supports UHS- II SD cards, so the best choice is to get a UHS-II SD memory card. 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 SanDisk Extreme PRO UHS-II SDXC card and Lexar Professional 2000x UHS-II SDXC card both has the same max read 300 MB/s and write speed 260 MB/s. Take a look at recommended UHS-II SD memory cards for Canon EOS R3 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 |