NEFfix: Program to Repair NEF File Corruptions
Prepared 2006-08-24 by Bill Claff

Introduction

NEFfix is a Microsoft Windows console executable. It can be used at a “DOS prompt”.

This program is provided “as is” with no expressed or implied warranties.

You may distribute the program provided that it is not modified and that no fee is charged.

Basic Usage

The program takes one parameter, a filename.

WARNING: As the file might be rewritten in place you should not use NEFfix on your only copy of a file; just in case the rewritten file is not fixed but rather more corrupted!

Command line example

· NEFfix C:\D200\DSC_0001.nef

If a problem is found the following message would be produced:

DSC_0001.nef Rewriting MakerNote directory.

If no problem is found the following message would be produced:

DSC_0001.nef MakerNote directory appears OK.

What NEFfix Does

The current version of NEFfix only looks for one specific problem.

This is a problem with Nikon Transfer (used by Nikon Capture) that causes a bad MakerNote directory to be written.

Restrictions

You can’t have any spaces in your parameters and you can’t quote parameters. (To be fixed.)

Conclusion

I wrote this to help someone out and I’m happy to share it with others.

Feel free to let me know about your experiences with NEFfix.