Yes, it is possible for you to restore your camera photos back.
1). Stop using this camera immediately in case that any newly taken photo will overwrite your lost photos stored on the same memory card.
2). Plunge this camera to a PC and begin to get back your wanted photos back. As I know, in your case, some professional camera card data recovery tools like Recuva, 4Card Recovery, iCare Data Recovery Free and PhotoRec, etc, can help you a lot.
Always select a right one for your card and use it to scan your camera card deeply.
3). Save and back up all restored data on a PC drive or other places, in case of data loss.
Note: Make data backups all the time.