Know Exif

If you have been using a digital camera you may know about the EXIF format. This is basically the same as JPEG (and the files are stored, named, and handled as standard JPEG files) with the exception of a small amount of added information. This added information is sometimes referred to as the EXIF header.

As you may know, EXIF is the standard used to store camera data in every digital photo. EXIF makes it possible for programs like iPhoto to tell you that this picture was taken April 2nd, 2005, with a Canon Powershot S50, aperture 5.6 and so on. The EXIF standard has a tag for GPS data, and there’s even a proposal to make a more “human” location data tag in EXIF, like “At Aunt Mary’s cabin, Nordfjord, Norway”. Superb camera site dpreview has a good page about EXIF.

Exif Show is a IE Plug-in to read EXIF information. It can analysis and display digital camera image EXIF information when you are browsing the image in IE. The Exif Show are available for Windows OS and IE 5.0 or later. After you setuped Exif Show, restart IE browser. Access any web page with digital camera image and right click mouse on the image, then you can see the "Exif info" item on the popup menu

With digital cameras, on each and every shot, the camera records not only the date and time, but all the other camera settings used to record the photo. That includes the shutter speed, aperture setting, ISO setting, is the flash was used, the focal length and lots lots more. This is stored with the photo in what is called EXIF data inside your jpeg file (not technically correct, as EXIF is actually a file format, but it’s good enough for our discussion). When you copy the image to your computer, the EXIF data is copied as well, as a part of the image.