On my A7r IV, I was able to record RAW files to media recording Slot 1, and JPG files to media recording Slot 2. Then I had one card with all RAW files and the other card with all JPG files. I would set video recording to Slot 1 and used my best, highest capacity SD card in Slot 1. I have a CFExpress Type A card in Slot 1 and a SD Card in Slot 2 if it matters. With my new A7r V, I cannot seem to split RAW and JPG onto different Slots anymore. Is that the case or am I just failing to understand the new menu system and options under Media Settings? The official Sony help manual sheds no light on this subject... https://helpguide.sony.net/ilc/2230/v1/en/contents/TP0003057060.html