EXIF (Exchangeable Image File Format) is a metadata standard for adding information such as descriptions, copyright information and camera settings to images. The format achieved its status as a universal standard with the widespread use of digital cameras. The data recorded in EXIF format may be used directly by the user or communicated to a device (to a printer, for example). EXIF is a flexible format that makes it possible to add information to an image that is specific to a particular camera and can only be interpreted by software from the camera’s manufacturer. JPEG and TIFF are the most popular file formats that support EXIF.

EXIF

Field
Type
Default Setting
Possible Settings
Description
Orientation INT Top Left Top Left/Top Right/Bottom Right/Bottom Left/Left Top/Right Top/Right Bottom/Left Bottom Image orientation
DateTime DATE&TIME Current date and time Date and Time Date and Time
DateTime Original DATE&TIME Current date and time Date and Time Date and Time
DateTime Digitized DATE&TIME Current date and time Date and Time Date and Time
Horizontal Res INT 72 Whole number Horizontal resolution
Vertical Res INT 72 Whole number Vertical resolution
Resolution Unit INT NONE NONE/Inches/Cm Unit of measure for resolution
ImageDescription STRING Description sample text Text Image description
Make STRING Make txt Text Information field
Model STRING Model name Text Information field
Software STRING ImageConverter Plus Text Source program
Copyright STRING (C) Copyright … Text Copyright

 

Unlike EXIF, which is intended for recording technical information for digital images, IPTC is a metadata format that can record such information as country, city, author and title.
JPEG and TIFF are the most popular image formats that support IPTC.

IPTC

Field
Type
Default Setting
Possible Settings
Description
Record Version STRING n/a Text Information field
Image Name STRING Image Name txt Text Information field
Edit Status STRING n/a Text Information field
Priority STRING n/a Text Information field
Category STRING n/a Text Information field
Supplemental Category STRING n/a Text Information field
Fixture Identifier STRING n/a Text Information field
Keyword STRING n/a Text Information field
Release Date DATE Current date Date value Release date
Release Time TIME Current time Time value Release time
Special Instructions STRING n/a Text Information field
Reference Service STRING n/a Text Information field
Reference Date DATE Current date Date value Date
Reference Number STRING n/a Text Information field
Created Date DATE Current date Date value Date image created
Created Time TIME Current time Time value Time image created
Originating Program STRING n/a Text Information field
Program Version STRING n/a Text Information field
Object Cycle STRING n/a Text Information field
Byline STRING Byline txt Text Information field
Byline Title STRING Byline Title txt Text Information field
City STRING City txt Text Information field
Province STRING n/a Text Information field
Country Code STRING n/a Text Information field
Country STRING n/a Text Information field
Original Transmission Reference STRING n/a Text Information field
Headline STRING n/a Text Information field
Credit STRING n/a Text Information field
Source STRING Caption txt Text Information field
Copyright STRING n/a Text Information field
Caption STRING n/a Text Information field
Local Caption STRING n/a Text Information field
Caption Writer STRING n/a Text Information field