Please download and install 7thShare Card Data Recovery for Mac on your Mac at first.
After you downloading this software, please launch Mac SD Card Recovery and choose the file types you want to recover, also you can select "Recover All". Then click "Start" button.
Select the SD card you want to recover the lost files and click "Start Scan" button, the software will quickly scan your selected SD card to find all your lost files.
After the scan, all the lost data will be found and displayed in the scanning result. You can list them according to path, types or create time for your preference. Then preview all the recoverable files and select out those you want. Finally click "Recover" to get them back.
Tip: Please save all the recovered files on another disc to avoid data overwriting.