What is EXIF data?
Almost all digital cameras save JPEG files with EXIF (Exchangeable Image File Format, it is also included in RAW and TIFF files, but it is not supported in JPEG 2000, PNG, or GIF files.) data. Generally, camera settings and scene information are recorded into the image file by the camera. Examples of stored information are shutter speed, date and time a photo was taken, focal length, exposure compensation, metering pattern and if a flash was used.
So, you can use the EXIF data as a learning tool for photography. Many camera owners study EXIF to compare successful photos to those that are not. Data provides insight about how camera settings affect photo characteristics such as focal length, exposure compensation and ISO.
How to view EXIF data?
EXIF data can be read by several softwares. The software that came with your digital camera lets you view the data. Obviously, Lona Photo Viewer has the feature to read EXIF data of a photo. Once it is installed in your computer, double-click the photo display in the middle window. As shown in the illustration to the bottom, click the Details and EXIF tab. You will find all the available EXIF data in the photo.
Lona Photo Viewer can also read General information, JFIF, TIFF, Picture Style and the unique data of the digital camera manufacturers like Canon, Nikon, …
The full example:
The following table shows Exif data for the above photo made with a typical digital camera. Notice that authorship and copyright information is generally not provided in the camera’s output, so it must be filled in during later stages of processing.