ExifTool Forum

General => Other Discussion => Topic started by: enzo on January 27, 2025, 01:46:50 PM

Title: corrupted .nef File
Post by: enzo on January 27, 2025, 01:46:50 PM
Hello.
I have a problem with .nef file from e a Nikon z6 camera.
I copied an entire card and after a few months I noticed that some files, very important, do not open with any software.
Can someone help me?
Title: Re: corrupted .nef File
Post by: Phil Harvey on January 27, 2025, 01:48:33 PM
It is unlikely that anything more than a JPEG preview may be salvaged, but if you send me one of them I'll take a look to see what can be done.  My email is philharvey66 at gmail.com

- Phil
Title: Re: corrupted .nef File
Post by: enzo on January 27, 2025, 02:02:03 PM
Thanks for your Reply, Phil.
I sent file by email
Title: Re: corrupted .nef File
Post by: StarGeek on January 27, 2025, 02:19:12 PM
A quick test you can do is to zip one of the NEF files. NEF files are already compressed so when you zip an undamaged file, the resulting zip will be about the same size. If it compresses a large amount, for example a 20MB image compresses down to about 1-2 MB zip file, then the image is irrevocably damaged.
Title: Re: corrupted .nef File
Post by: Phil Harvey on January 27, 2025, 04:09:09 PM
I got the file and responded by email.  Unfortunately it was entirely filled with binary zeros. :(

I tried zipping it too, and the 23 MB file zipped down to 23 kB.

- Phil