title: Where can I find the list of metadata type to extract specific exif
body: <p>I'm working on a project where I need to make pdf from image and merge it. For this I use PDFBox but at some point I need to read the exif of an image like the orientation and the resolution and so I go with metadata-extractor. I didn't find any useful doc or example.</p>
  
  <p>I find that I can read a specifics exif but I don't know how exactly</p>