D90Hack Program
Updated 2008-09-14 by Bill Claff

Introduction

D90Hack 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.

Why?

Older software will open D300 files but not D90 files.

Simply changing the model in the Nef file allows D90 users to use older software.

Because of certain differences between D90 and D300 files, D90Hack works properly with Nikon NX
but not with Adobe DNG Converter or Adobe CS3.

Other software is untested but I expect in general for Nikon to work and Adobe to not work.

You can report your success or failure to me.

Basic Usage

The program takes either one or two parameters.

The first parameter is a filename. This must be a .Nef file.
You may use wildcards but the Nef file extension must be present.

The second parameter is an option.

D300 indicates changing the model from D90 to D300.

D90 indicates changing the model from D300 to D90. (Only for a file that was originally D90.)

If the second parameter is omitted the model is flipped between D90 and D300.

Command line examples

·        D90Hack TEST.NEF D300

If the model is D90it is changed to D300.

·        D90Hack TEST.NEF D90

If the model is D300 it is changed to D90.

·        D90Hack *.NEF

Processes each Nef file in the current directory.

If the model is D90it is changed to D300. If the model is D300 it is changed to D90.

What D90Hack Does

·        The model name is changed “in place”.

·        The date and time of the file are unaffected.

·        You get positive confirmation on success, nothing on failure.

Restrictions

These instructions assume that you have placed D90Hack in a folder that is on your path.

To find such a folder enter Path at the DOS prompt.

The file cannot be open elsewhere.