The information displayed in the Focal Length depends on what was extracted from the exif:
- If nothing is extracted from the exif, a zoom value corresponding to a focal length needs to be set. The normal zoom is the default value.
- If a focal length is extracted from the exif, the Exif Information area displays what is extracted from the exif.
- If a standard focal length is extracted, a camera type information needs to be defined. The resulting focal is displayed in the Exif Information area.
- If a zoom has been previously defined for the loaded model, then it is used.