Photo metadata problem

[Airport-Data]

As some of our visitors have found, the photo metadata section sometime shows inaccurate or even wrong data.

Photo meta data, or formally Exchangeable image file format (official abbreviation Exif, not EXIF) is a specification for the image file format used by digital cameras. The specification uses the existing JPEG, TIFF Rev. 6.0, and RIFF WAVE file formats, with the addition of specific metadata tags. It is not supported in JPEG 2000 or PNG.

Each camera manufacturer can choose to extend the Exif standard using "MakerNote" tag to store any custom settings. This effectively results to an unique implementation for each manufacturer, if not each camera model. It makes it very hard to decode the Exif data using an universal program.

As an example, the Exif code we use can handle Canon, Nikon, Sony, Olympus, Fujifilm cameras, but will have a hard time to deal with the rest.

We will keep on improving our Exif code to support more camera manufacturers and models.

For more details on Exif, visit Wikipedia Exif page.

Ken Wang
Airport-Data.com Team