Actually, it happens due to corruption of NEF file format of Nikon digital camera. Nikon used this file format to store photos in the memory card. There are various reasons for the corruption nef file format such as virus attack, hard disk corruption, memory card corruption, mishandling of camera and many more.
Thus, in order to resolve the corruption issue of nef file format or nef recovery you can use Nikon Photo recovery. I have also used this tool and I am sure that it will also resolve your problem.
You can easily recover from Nikons camera's sd card. There may be many reasons for data corruption. May be due to virus attacks, hardware malfunctioning, human errors and many such reasons for data corruption and deletion. But dont worry! by using a nikon SD card recovery software, you can easily recover corrupted data. It helps in file recovery, documents recovery, nef photo recovery etc. For more information, you can easily download the free trial version of digital camera recovery software.
We have the Nikon D3200 camera, with a 16 Gb SD card and all of a sudden the camera gave us the dreaded "card is damaged" error message.This with approx 1500 photos that we had not back up (-I know, I know..). The card could not be read or recognized in the computer either. Tried several computers. Then I went online and searched for information and possible solutions. Tried various softwares with noo result (as they could not find the card), called Nikon that advised us to some other softwares, but they came up short like the others. the I saw some post about recoverfab in Germany (http://recoverfab.com), and decided to give it a try. contacted them, sent the card as per their instructions and just within 24 hours we were informed that the photos and videos had been recovered. They are being put onto an FTP site now (we could preview them first). You do not pay unless they can recover the memory card and the photos, which is good. We are very happey with the excelent and speedy service. If the card cannot be rcognized in a coputer I think Recoverfab is THE option - all the softwares out there will not work, so save your time.