AttributeMagic Pro: exif editor

Exif stands for Exchangeable Image File Format, and is a standard for storing interchange information in image files, especially those using JPEG compression.

Most digital cameras now use the Exif format. The format is part of the DCF standard created by JEITA to encourage interoperability between imaging devices.

The metadata tags defined in the Exif including:

Date-time information. Digital cameras will record the current date and time and save this in the image file. Related tags are: Picture taken, Digitized, Original
Camera settings. This includes static information such as the camera model and make, and information that varies with each image such as orientation, aperture, shutter speed, focal length, metering mode, and film speed information
Location information, which could come from a GPS receiver connected to the camera. As of 2004 only a few cameras support this, though. Some people therefore use a normal receiver to track their movements, and then post-process the images by matching the timestamps in the images with the log from the receiver and can so add the missing information to images
Descriptions and copyright information. Again this is something which is most often done when post-processing the images, as only high-end camera models let the user choose a text for these fields