Focal length designation

  • Hi All,
    Here is a question for those in the know:
    I am used to seeing a single number for focal length in the EXIF data such as:
    Focal Length: 39.1 mm.
    But I am confused by
    Focal Length: 468/100 mm.
    Am I to take it as 4.68 mm? Any thoughts?
  • focal length
    I suppose you're right
  • Focal length
    Can't possibly be true! Extreme fisheyes are 8mm. Frankly I don't know what it means.