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FAQ

I can't see the 32-bit HDR file after the merge, where is it supposed to be?

The merged 32-bit HDR file shows next to the bracketed photos you selected for the merge. If you don't see it, click above the filmstrip and check All Photographs.

I am getting the error "canReadFile: dng_error_bad_format"

This error normally happens when using version 4.0 of Lightroom. Upgrading to version 4.1 or higher should solve the issue, as support for 32-bit TIFF file was added in Lightroom 4.1.

I installed the plugin, but it does not show up in Lightroom

If you restarted Lightroom after installation and the "Merge to 32-bit HDR" item does not show under File > Plug-in Extras, then it is likely because Lightroom is looking for the plug-in in another place than where you installed it. This could happen if Lightroom was installed by a different user account than the one you used to install the plug-in for example, but might also depend on other factors specific to your Lightroom installation.

It is possible to manually instruct Lightroom to install plug-ins from a different location. You can install the plugin manually as follows:

  1. Choose File > Plug-in Manager.
  2. On the Plug-in Manager dialog, click on the Add button on the bottom left.
  3. Browse to the location where you installed or downloaded the MergeTo32bitHDR.lrplugin file. If you are on Windows and installed the plugin with the installer, the plugin file would be in this folder:
    Windows 7 or Vista:
    C:\Users\<UserName>\AppData\Roaming\Adobe\Lightroom\Modules
    Windows XP:
    C:\Documents and Settings\<UserName>\Application Data\Adobe\Lightroom\Modules
    Where <UserName> is your account name on the computer.
  4. Click on the Add Plug-in button.

How do I use the plug-in?

  1. After installation, restart Lightroom if you are on Windows (or used the installer on Mac).
  2. Select bracketed photos from either the Filmstrip or the Grid.
  3. Right-click to invoke the contextual menu.
  4. Select Export and then Merge to 32-bit HDR.
  5. Select the desired option and click on the Merge button.
  6. In case the merged image does not show once the merge has completed, click above the filmstrip and check All Photographs.

I bought Photomatix Pro. Is the plugin free for me?

If you bought a license of Photomatix Pro before the Merge to 32-bit HDR Plug-in was released, i.e. before August 2012, you are entitled to a free license key for the plug-in. You can retrieve it from this page.