If you want to recover your photos, I think you need Mac recovery software.Have you tried Nice to Recover Photo for Mac? I have lost some important data from formatted SD card to Mac. Finally I bought Nice to Recover Data for Mac to recover it. However,I don't know how to use it.Finally I seek help here.And I solved it. I made it to recover data. Nice to Recover Data for Mac also can recover photos. I hope it can help you.You can free download the trial version to try in:

http://www.recovery-iphone.com/photo-recovery-software-for-mac.html  (photo recovery)

http://www.recovery-iphone.com/mac-file-recovery-software.html   (files recovery)

http://www.recovery-iphone.com/mac-recovery-software.html   (all data recovery)