Editing TIFF (section)

===Exif===
The [[Exif]] specification<ref>{{cite web |author=Technical Standardization Committee on AV & IT Storage Systems and Equipment |title=Exchangeable Image File Format for Digital Still Cameras |id=JEITA CP-3451 |version=Version 2.2 |publisher=[[Japan Electronics and Information Technology Industries Association]] |url=http://www.exif.org/Exif2-2.PDF |date=April 2002 |access-date=2024-09-05|archive-url=https://web.archive.org/web/20220428165430/http://www.exif.org/Exif2-2.PDF|archive-date=2022-04-28}}</ref> builds upon TIFF. For uncompressed image data, an Exif file is straight off a TIFF file with some private tags. For [[JPEG]] compressed image data, Exif uses the [[JPEG File Interchange Format]] but embeds a TIFF file in the APP1 segment of the file. The first IFD (termed 0th in the Exif specification) of that embedded TIFF does not contain image data, and only houses metadata for the primary image. There may however be a [[thumbnail]] image in that embedded TIFF, which is provided by the second IFD (termed 1st in the Exif specification). The Exif audio file format does not build upon TIFF.

Exif defines a large number of private tags for image metadata, particularly camera settings and [[geopositioning]] data, but most of those do not appear in the ordinary TIFF IFDs. Instead these reside in separate IFDs which are pointed at by private tags in the main IFD.