Sony A1 vs Canon EOS R5
The Sony A1, with its dual memory card slots, can take two types of Memory Cards: SD cards and CFexpress Type A cards.
How to Enable Auto Switching Memory Cards on the Sony a7R IV
Launched in 2018, the Sony A7III is a professional camera featuring two memory card slots for dual recording. If you’re wondering what is the best SD card for the Sony A7III and what its specifications are, I have answers to all your questions.
Sony A7R IV Review | Photography Blog - photographyblog
The two slots on the A7R IV accept SD UHS-II cards, just like the A7 IV.