Compression is used when adding new photos to a patient.

At the moment of inserting the image to the database, compression is performed or not.

• If Compress is checked, compression is performed using the current compression settings.
  The current compression settings are found in the menu Options/Preferences and then in the Compression tab.
  The main setting is the Quality factor. A quality factor of 100 is the same as no compression.
  A quality factor of 75 gives approximately 11 times compression, with a small, neglectible, loss of detail.
  You can test the difference of the compression effect easily by inserting the same photo several times and choosing different compression settings for each photo.
  Then select a split view 2x2 and select all the different photos.
  Zoom in to see the differences.
• If Compress is un-checked, no compression is performed.