Windows 7 Tip: 
If you’ve accidentally deleted images from your digital camera’s memory card, or somehow corrupted the card, use the Digital Photo Recovery tool to get them back.
Free Art Plus Digital Photo Recovery tool can help you recover lost images from corrupted or accidentally formatted digital camera memory cards. Program works with all types of memory cards. It’s able to recover images from formatted cards. Reads corrupted cards (even if they’re not recognized by Windows).
Recovers JPEG, TIF (and most of RAW) files. Program should be able to read all memory cards currently available on the market. Version 2.3 may include unspecified updates, enhancements, or bug fixes.
* Works with ALL types of memory cards!
* It’s able to recover images from formatted cards!
* Reads corrupted cards (even if they’re not recognized by Windows)!
* Recovers JPG, TIF and most of RAW files!
Download Art Plus Digital Photo Recovery
This is a really nice software, I have sometimes deleted pictures from my camera which are really precious, this will definitely help me recover them now