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I checked the automatic re-import but the processed file is not re-imported

The processed file has most probably been re-imported, but you will not see it if the Lightroom filmstrip is set to "Previous Import". If "Previous Import" shows above the Lightroom Filmstrip, right-click on it and select "All Photographs" instead.

Note that you will only need to do this the first time you use the automatic re-import option.

When exporting photos, I get the message "Lightroom rendition failed".
What should I do?

This error message is normally returned when the location of the photos you selected in Lightroom for export has changed since the time you added these photos to your library.

So, please check whether you had not moved the files of the photos you tried to export. If this is the case, then remove the photos from your Lightroom library and re-import them again. The export to Photomatix Pro will then work normally.

How do I install the Lightroom plugin and how do I open it?

This requires downloading and installing Photomatix Pro as detailed in the installation instructions for the plugin.

I followed your instructions to install the plugin, but it still does not show up in Lightroom.

If the "Export to Photomatix Pro..." item does not show under "File > Plug-in Extras", this could be due to an installation issue or because Lightroom is looking for plugins somewhere other than where you installed it. The latter could happen if Lightroom was installed by a different user account than the one used to install Photomatix Pro for example, but might also depend on other factors specific to your Lightroom installation.

You can solve the issue by following these steps to install the plugin manually:

  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 plugin. The plugin name is Photomatix.lrplugin. This is a folder on Windows, and a file on Mac.

    If you are on Windows and installed the plugin with the Photomatix Pro installer, the plugin would be in this folder:

    Windows 8, Windows 7 or Windows 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.

    In case the Photomatix.lrplugin would not be in the above folder, you can download the plugin alone using the direct link: Photomatix.lrplugin zip file for Windows

    If you are on Mac OS X and downloaded the Photomatix Pro installer, you can download the plugin alone using the direct link: Photomatix.lrplugin zip file for Mac

  4. Click on the Add Plug-in button.

My files are in ProPhoto RGB color space but the results are assigned Adobe RGB. How can I change this?

To use a color space other than the default Adobe RGB color space, please proceed as follows:

  1. Select images on the filmstrip and choose File > Export... from the main menu. Alternatively, right click and select Export > Export... from the contextual menu.
  2. On the Export dialog, select Photomatix from the 'Export To' pop-up menu.
  3. Select the desired color space from the Color Space pop-up menu.
  4. Click on the Export button.

The Photomatix Plug-in's dialog will then show. The plug-in will export in the color space you have specified on the Export dialog in step 3.

Does the plug-in work in Lightroom 5? If so, how do I move it from Lightroom 4 to Lightroom 5?

Yes, the Lightroom plug-in included in the current version of Photomatix Pro works fine in Lightroom 5.

The installation location of plug-ins did not change between Lightroom 4 and Lightroom 5, which means you should not need to do anything to have the plug-in work in lightroom 5. However, in case you uninstalled Lightroom 4 and this resulted in removing your Lightroom plug-ins folder, then you will need to re-install the plug-in in this case. The installation instructions are detailed here.

Where are the exported files stored and do they get deleted?

The TIFF files exported by Lightroom to Photomatix Pro are temporary files. They are saved under a folder of your temporary directory, and then deleted by Photomatix Pro once it has processed them.

I converted my raw files to DNG in Lightroom, but it looks like the plug-in exports TIFF files. Wouldn't it be better to export my DNGs for HDR processing?

The default conversion of a raw file to DNG does not change the "raw" nature of the file. For Photomatix, a DNG file is still a raw file, and Photomatix will need to convert it before HDR processing.

The RAW conversion in Photomatix is slower and of lesser quality than the conversion/rendering done in Lightroom. This is why is much better to have Lightroom convert the DNG files to TIFF when exporting to Photomatix rather than letting Photomatix do the conversion itself. In fact, the main benefit of using the Lightroom plugin is precisely the ability to have Lightroom automatically convert the raw/dng files to TIFF prior to processing in Photomatix.

Does the plug-in work with the 64 bit version of Lightroom?

Yes, our Lightroom Export plug-in works fine in Lightroom run in 64-bit mode.

Lightroom Export plug-ins are written in a system independent scripting language and are just intended to select options for exporting files rendered by Lightroom to another program (in our case Photomatix Pro). Lightroom Export plug-ins do not perform imaging processing on their own -- they are thus quite different from Photoshop Filter plug-ins which do their own processing and thus need to be recompiled in 64-bit to work in Photoshop CS4 64-bit.

I have already installed Photomatix for Windows without the plugin.
How can I now install the Lightroom plugin alone?

The simplest way is to just download and install Photomatix Pro for Windows again, making sure that the box "Yes, install the Lightroom plugin" is checked during the installation process.

Re-installing Photomatix Pro will do no harm, but we still recommend that you first uninstall Photomatix Pro (by using the control panel) before installing again. Note that you will have to close Photomatix in case it is open when you are re-installing it, otherwise the installation will report an error.

If you prefer to install the plugin alone, then you can do this by installing the plugin manually as detailed above

Does the plug-in work in Lightroom 1.4?

The current version of the plug-in is supposed to work in Lightroom 1.3 and 1.4, but with the automatic reimport option disabled as this only works with Lightroom 2.

However, there is a bug in the plug-in that makes it fail to export files in Lightroom 1. We will fix this bug in a further version of the plug-in. In the meantime, you can use the older version of our Lightroom Export plug-in which works fine in Lightroom 1.3 and 1.4. The download and installation instructions for it are below:

  1. Download here the older version of the Lightroom Export plug-in to Photomatix Pro.
  2. Go to the location where you unzipped the downloaded file.
  3. Move the folder Photomatix.lrplugin to the following directory depending on your platform:


    • C:\Program Files\Adobe\Adobe Photoshop Lightroom 1.3
    • or
    • C:\Program Files\Adobe\Adobe Photoshop Lightroom 1.4

    Mac OS X:

    • /Library/Application Support/Adobe/Lightroom/Modules
  4. Restart Lightroom.
  5. Select bracketed image files and choose File > Export to Photomatix Pro.