A digital camera doesn’t store only information about the pixels of the image, it also stores information about the date and time a picture was taken, aperture, shutterspeed, ISO and many other camera settings. All these information, also called “metadata” are stored in a header. One of the most used type of header is EXIF (Exchangeable Image File) header. Japan Electronic Industry Development Association (JEIDA) created EXIF as a standard for storing information, to encourage interoperability between imaging devices. As you use EXIF you do not need to worry about remembering the settings you used when taking the image, EXIF will do that for you.

After taking a picture and transfer it to your computer, you can use an image editing and viewing program, which allows you to display or to edit the EXIF data. To make sure you don’t loose the EXIF data while saving a photo after editing you should always preserve your original image and use “Save As” after editing it.

5 Responses to “EXIF”

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  2. Andrei says:

    Thanks for your appreciation. Some of the ideas are directly from me 🙂 and some of them are from a couple of websites that I’ve studied in the past.

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