The Exif window shows the Exif, IPTC and XMP metadata that are present in the image file.
Unlike the other parts of the program, this window shows the "raw" metadata read from the file, without any post-processing. Thus, this window is ideal for metadata debugging.
The Exif pane in the Info Sidebar is more suitable for general use, as it displays merged data from sidecar and private metadata files.
To facilitate including extra items in the Exif pane in the Info Sidebar , it is possible to drag-and-drop an item from the Exif window onto the Sidebar pane.