That is true. But you can override the default maximum size by following the instructions in this article.
If you are not comfortable editing the Registry, then you can open the photo in the Editor and resize it to a lower (compatible) resolution. Save the file in a Version Set with the original, and you should be able to view a thumbnail of the image at the top of the Version Set stack.
Thanks, it's works with regedit (but i must search for the emplacement to make the Dword)