In my wedding day The photographer took photos from Canon R in the morning and after 2 PM ( on the same day ) he moved the SD card to the Sony A7R iii. But we he checked the photos after the wedding day all the photos took in the Canon R was missing but all the photos took from the Sony A7R iii are exits. I tried Sandisk recovery tools but no-luck. Any help?
Seems like the photos have been overwritten. The photographer must have got the notification of insufficient memory or the camera may have asked to format. You can try some recovery tools like Stellar or DMDE, it can attempt to find the photos which are not visible not been overwritten.