JEITA CP-3451 Explication - 136 - 6.    The DCF Standard The DCF Standard, as noted in Chapter 2, is closely tied to the Exif Standard. With this revision of the Exif Standard, applicable Exif versions noted in the DCF Standard shall be interpreted as below. The contents of the DCF Standard itself shall not change. a) "Background to this standard recommendation" Change to read "*1) Exif Version 2.1 Digital Still Camera Image File Format Standard (Exif) Version 2.1 and Exif Version 2.2 Digital Still Camera Image File Format Standard (Exif) Version 2.2, Japan Electronics and Information Technology Industries Association." b) 1.3. Glossary, Exif Standard Change to read "*1) Exif Version 2.1 Digital Still Camera Image File Format Standard (Exif) Version2.1 and Exif Version 2.2 Digital Still Camera Image File Format Standard (Exif) Version 2.2, Japan Electronics and Information Technology Industries Association." c) 3.3.1. Purpose Change to read "Exif Version 2.1 or Exif Version 2.2." d) Annex C, Fig. C-1 Change to read "Exif Version2.1 conformant or Exif Version 2.2 conformant." 7.    Guidelines for Implementing Exif 2.2 Tag Information 7.1    General This chapter gives guidelines for implementing and using the tags defined by the Exif Standard that are of use in print processing (e.g. image retouching). Writers should record these tags as indicated in these guidelines. Readers can make use of the information recorded in Exif file tags in order to perform optimal image processing. Note that the output processing indicated here for readers are given for the sake of example. Examples of tag handling by application software are also given, in section 7.4 Application Software Guidelines. Tag IDs and values are given in the explanations. For details, refer to the Exif Standard. 7.2    Definitions Key terms used in this document are defined as follows. a) Writer:   A digital still camera (DSC) or other device or application software that can output an Exif file.   b) Reader:   A device, such as a printer with memory card slot, capable of directly reading an Exif file and printing or performing other output processing, as well as application software that uses Exif tags to perform image processing for output. c) Tag Information:   A description of the tag contents. The tag definitions are given in the main specification.