Introduction to Exif Meta Data

Exif stands for Exchangeable Image File Format. This is a specification for additional data about the picture that are stored in the picture file.
Exif specifications describe dozens of picture metadata:

• Device used to take the picture
• Picture size (Height and Width)
• Device resolution,
• Picture shoot data (use of flash, date and time of shoot, exposure, light source, focal lenth, ...)
• GPS data (location at the time of shoot)
• Thumbnails
• ...

PhotoRenamer 4.1 reads and displays the Exif MetaData of the pictures (if those data are available) and proposes an option to use the Exif Date and Time of Shoot (instead of the Date and Time of the File) to build the Date and Time parts of the file names.

The complete Exif specifications can be found here