Hi there, if you haven't overwritten the permanently deleted photos with new files and data, it's possible to scan for the file traces for data recovery with iBoysoft Data Recovery Software.
iBoysoft Data Recovery Software is designed with advanced disk scanning skills and outstanding data recovery algorithms, which can scan for any deleted or lost files from the hard drive bit by bit and sector by sector. It can recover permanently files from Mac with a high success rate. You can download it to scan for the lost files first, then preview the scanned results to see if your files are listed in them, moreover, you have a 1GB limit for free recovery. If you have more than 1GB of files to recover, just purchase a license for the complete data recovery.
Say one more thing, you'd better back up everything important on your Mac to avoid data loss like this permanent deletion, or you might find no way to make any remedy.