Thanks for your question. The short answer, unfortunately, is no; the current MLA version does not have any features for editing the metadata in image files.
In fact, MLA does not have any features that modify files associated with Media Library items. That was one of my early design decisions and I am still wary of messing with the files in any way. MLA does let you extract metadata and populate WordPress database values with it, e.g., custom fields. You can then edit the database values and use the results in your application.
I do not know of another plugin that provides these features, but I recently learned of a stand-alone tool you may find useful:
EXIF Pilot, by Two Pilots software
Of course, you can also use many other tools such as Adobe Photoshop or Lightroom for this task.
I am marking this topic resolved simply because the question has been answered. I hope you find a solution for your application. If you do, consider posting an update here so I and other users can benefit. Thanks for your interest in the plugin.
