It happens often these days. We may delete or format a partition with much required file or an old photo which has some sweet memories. Recuva also works on your camera’s SD card or mp3 players. You can choose to recover photos only or images only etc. You can find more details on download page.
Recuva is a freeware and available to download from here. Better option will be to download from Filehippo. The free and paid versions are not much different.