ISO 12234-3:2016

DRAFT INTERNATIONAL STANDARD
ISO/DIS 12234-3
Secretariat: ANSI
ISO/TC 42
Voting terminates on:
Voting begins on:
2016-01-29
2015-10-29
Electronic still picture imaging — Removable memory —
Part 3: XMP for digital photography
Image électronique de photographie — Mémoire amovible —
Partie 3: Utilisation du XMP
ICS: 37.040.99
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 12234-3:2015(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
©
PROVIDE SUPPORTING DOCUMENTATION. ISO 2015

ISO/DIS 12234-3
ISO/DIS 12234-3:2015(E)
Contents Page
Foreword . v
Introduction . vi
1 Scope . 1
2 Normative reference . 1
3 Terms and definitions . 1
4 Reference model and usage . 2
4.1 General considerations . 2
4.2 Native metadata properties and their usage . 2
5 XMP namespace . 3
5.1 General . 3
5.2 Extensions . 3
6 Metadata definitions . 4
6.1 Metadata lists . 4
6.2 Metadata definitions . 9
6.2.1 ApertureValue . 9
6.2.2 Artist . 9
6.2.3 BodySerialNumber . 9
6.2.4 CameraOwnerName . 10
6.2.5 CaptureSet . 10
6.2.6 CFAPattern . 10
6.2.7 ColourEncoding . 10
6.2.8 Copyright . 11
6.2.9 DateTimeDigitized . 11
6.2.10 DateTimeOriginal . 11
6.2.11 DateTime . 11
6.2.12 DigitalZoomRatio . 11
6.2.13 Editor . 12
6.2.14 ExposureBiasValue. 12
6.2.15 ExposureIndex . 12
6.2.16 ExposureProgram . 12
6.2.17 Faces . 13
6.2.18 Favorites . 13
6.2.19 Flash . 14
6.2.20 FocalLength . 14
6.2.21 FocalLengthIn35mmFilm . 14
6.2.22 GPS . 14
6.2.23 ImageAspectRatio . 16
6.2.24 ImageDescription . 16
6.2.25 ImageLength . 16
6.2.26 ImageTileSet . 17
6.2.27 ImageWidth . 17
6.2.28 LensMake . 17
6.2.29 LensModel . 17
© ISO 2015, Published in Switzerland
6.2.30 LensSerialNumber . 17
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
6.2.31 LensSpecification . 18
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
6.2.32 LightSource . 18
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
6.2.33 Make . 19
the requester.
6.2.34 MaxApertureValue . 19
ISO copyright office
6.2.35 MeteringMode . 19
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2015 – All rights reserved

ISO/DIS 12234-3
Contents Page
Foreword . v
Introduction . vi
1 Scope . 1
2 Normative reference . 1
3 Terms and definitions . 1
4 Reference model and usage . 2
4.1 General considerations . 2
4.2 Native metadata properties and their usage . 2
5 XMP namespace . 3
5.1 General . 3
5.2 Extensions . 3
6 Metadata definitions . 4
6.1 Metadata lists . 4
6.2 Metadata definitions . 9
6.2.1 ApertureValue . 9
6.2.2 Artist . 9
6.2.3 BodySerialNumber . 9
6.2.4 CameraOwnerName . 10
6.2.5 CaptureSet . 10
6.2.6 CFAPattern . 10
6.2.7 ColourEncoding . 10
6.2.8 Copyright . 11
6.2.9 DateTimeDigitized . 11
6.2.10 DateTimeOriginal . 11
6.2.11 DateTime . 11
6.2.12 DigitalZoomRatio . 11
6.2.13 Editor . 12
6.2.14 ExposureBiasValue. 12
6.2.15 ExposureIndex . 12
6.2.16 ExposureProgram . 12
6.2.17 Faces . 13
6.2.18 Favorites . 13
6.2.19 Flash . 14
6.2.20 FocalLength . 14
6.2.21 FocalLengthIn35mmFilm . 14
6.2.22 GPS . 14
6.2.23 ImageAspectRatio . 16
6.2.24 ImageDescription . 16
6.2.25 ImageLength . 16
6.2.26 ImageTileSet . 17
6.2.27 ImageWidth . 17
6.2.28 LensMake . 17
6.2.29 LensModel . 17
6.2.30 LensSerialNumber . 17
6.2.31 LensSpecification . 18
6.2.32 LightSource . 18
6.2.33 Make . 19
6.2.34 MaxApertureValue . 19
6.2.35 MeteringMode . 19
ISO/DIS 12234-3
6.2.36 Model . 19
6.2.37 MultiSpectralCaptureSet. 19
6.2.38 OECF . 20
6.2.39 Orientation . 20
6.2.40 SceneLuminance. 20
6.2.41 Self-TimerMode . 21
6.2.42 ShutterSpeedValue . 21
6.2.43 Software . 21
6.2.44 SubjectArea . 21
6.2.45 SubjectDistance . 22
6.2.46 UserComments . 22
Annex A (normative) XMP metadata use with Exif image format . 23
A.1 Overview . 23
A.2 Uncompressed image data . 23
A.3 Compressed image data . 23
Annex B (normative) XMP metadata use with TIFF/EP image format . 25
B.1 Requirements . 25
Annex C (normative) XMP metadata use with JPEG 2000 image format . 26
C.1 Requirements . 26
Annex D (normative) Value forms and value types . 27
D.1 Value forms . 27
D.2 Value types . 27
D.2.1 Overview . 27
D.2.2 Basic value types . 27
D.2.3 Derived value types . 28
D.2.4 Exif namespace value types . 29
Bibliography . 33

iv © ISO 2015 – All rights reserved

ISO/DIS 12234-3
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 12234-3 was prepared by Technical Committee ISO/TC 42, Photography.
ISO 12234 consists of the following parts, under the general title Photography — Metadata:
 Part 1: Basic removable-memory model
 Part 2: TIFF/EP image data format
 Part 3: XMP for digital photography (Photo XMP)
ISO/DIS 12234-3
Introduction
Metadata enables digital images to be more easily searched and located (e.g. by knowing more about the image), more
appropriately processed and printed (e.g. by knowing the picture taking conditions), and more appropriately stored and
shared (e.g. by knowing the GPS location of the image and the copyright owner).
Several different TIFF-based metadata formats are commonly used in digital cameras, while XML-encoded metadata is
commonly used in on-line image databases.
The purposes of this standard are, first, to define unambiguously a mapping for metadata properties that are most relevant
to digital photography into XMP and, second, to document the meaning of each metadata item.
This International Standard is independent of the format of the image file, could be used inside any image file, and could
be used in databases of image-related metadata.
vi © ISO 2015 – All rights reserved

DRAFT INTERNATIONAL STANDARD ISO/DIS12234-3
Photography — Metadata — Part 3: XMP for digital photography
1 Scope
This International Standard defines an XMP namespace for the metadata used in digital photography
applications that is formatted for exchange using the syntax of the XML and provides standard definitions of
this metadata.
2 Normative reference
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO/IEC 10646, Information technology -- Universal Coded Character Set (UCS)
ISO 12232, Photography — Digital still cameras — Determination of exposure index, ISO speed ratings,
standard output sensitivity, and recommended exposure index
ISO 16684-1 Graphic technology -- Extensible metadata platform (XMP) specification -- Part 1: Data model,
serialization and core properties
IETF RFC 3986, Uniform Resource Identifier (URI): Generic Syntax, January 2005
http://www.ietf.org/rfc/rfc3986.txt
blin Core Metadata Element Set, Version 1.1
Du
http://dublincore.org/documents/dces/
Error! Hyperlink reference not valid.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
Exif
an abbreviation of "Exchangeable image file format for digital still cameras"
3.2
namespace
a set of unique names that are used to unambiguously label the elements in related data sets
3.3
property
named container for a metadata value at the top level of an XMP packet
ISO/DIS 12234-3
3.4
URI
a sequence of text characters that identifies an abstract or physical resource on the Internet as defined in
IETF RFC 3986 for specifying the Internet location of a contributing namespace.
4 Reference model and usage
4.1 General considerations
Figure 1 summarizes the reference model for this part of ISO 12234.
This International Standard defines metadata for digital photography and identifies the XMP namespaces
used to encode this metadata.
The metadata shall be encoded using the XMP data model and serialization defined in ISO 16684-1.
The metadata includes a number of items that are defined in either ISO 16684-1, in the Guidelines for Handling Image
Metadata, version 2.0, or in CIPA DC-010-2012 Exif 2.3 Metadata for XMP, as indicated in the descriptions of the
metadata items included in clause 6.

Figure 1 — Reference model
4.2 Native metadata properties and their usage
For Exif, TIFF and JPEG 2000 file formats supported technical metadata items, only TIFF tags, Exif tags
and/or JPEG 2000 boxes should be stored respectively when any one of these file formats is used with the
Photo XMP packet. These are Photo XMP properties in the dc:, tiff:, exif:, exifEX and xmp: namespaces
which are defined in clause 5.
2 © ISO 2015 – All rights reserved

ISO/DIS 12234-3
Refer to the section 4.2.2.1 and 4.2.3.1 of GUIDELINES FOR HANDLING IMAGE METADATA, Version 2.0,
November 2010 [8] for details.
5 XMP namespace
5.1 General
The XMP namespaces are described in this section. Since definitions from current XMP namespaces are
used when these definitions are appropriate, metadata properties in this International Standard are subset of
the properties in these namespaces. Users shall note interpretation from Photo XMP namespacies to these
XMP namespacies is not always possible. A new namespace is used only when this is required in order to
address newly defined metadata items.
The namespaces in Table 1 shall be used, and the preferred namespace prefixes should be used.
Table 1 — Namespaces used in Photo XMP metadata
Name URI Recommended prefix
Dublin Core http://purl.org/dc/elements/1.1/ dc
Exif 2.21 and Exif 2.3 http://cipa.jp/exif/1.0/ exifEX
Exif 2.2 or earlier http://ns.adobe.com/exif/1.0/ exif
TIFF Rev. 6.0 http://ns.adobe.com/tiff/1.0/ tiff
XMP http://ns.adobe.com/xap/1.0/ xmp
PhotoXMP http://imaging.org/pxmp/1.0/ pxmp

NOTE For convenience in this document, XMP names are commonly written in a prefix:local style, for
example, dc:title. The relevant URI for the prefix used in this document is either explicit or clear from local
context.
5.2 Extensions
Properties and definitions for new metadata may be added to existing component and XMP namespaces if they do not
cause problems for existing processors and applications of the metadata.
The names and definitions of properties in existing namespaces shall remain unchanged.
If it is necessary to change the definition of a property, a new property shall be created, and the old one may be
deprecated.
A new version of a namespace and definitions with a new URI may be created so that there is no logical connection
between the two versions and the same local name in two different namespaces refers to distinct properties and
definitions.
ISO/DIS 12234-3
6 Metadata definitions
6.1 Metadata lists
Photo XMP metadata items are defined in this section. A list of these items, along with a brief description and
the XMP name, is given in Table 2.
Table 2 — Photo XMP metadata list
Metadata name Description XMP name Type
exif:ApertureValue
Aperture value, unit is
ApertureValue Rational
APEX
Person who captured Ordered array of
dc:creator
Artist the image ProperName
Serial number of the
exifEX:BodySerialNumber
BodySerialNumber digital camera used to Text
capture the image.
This tag records the
owner of a camera
exifEX:CameraOwnerName
CameraOwnerName used in photography ProperName
as an ASCII string.
Image position within
pxmp:CaptureSet
CaptureSet a set of captured Structure
images.
Colour filter array
exif:CFAPattern
CFAPattern geometric pattern of CFA-Pattern
the image sensor.
Colour encoding pxmp:ColourEncoding Closed choice of
ColourEncoding
information integers
Image copyright
dc:rights
holder and optional
Copyright LanguageAlternaive
copyright statement.
The date and time
xmp:CreateDate Date
when the image was
DateTimeDigitized
stored as digital data
Date and time when
exif:DateTimeOriginal
DateTimeOriginal
the image was Date
captured
Date and time that the
xmp:ModifyDate Date
DateTime image was last
modified
Indicates the digital
exif:DigitalZoomRatio
DigitalZoomRatio zoom ratio when the Rational
image was shot.
pxmp:Editor
Person(s) who edited Ordered array of
Editor
the image file ProperName
Exposure bias in
exif:ExposureBiasValue
ExposureBiasValue exposure value, unit is Rational
APEX.
4 © ISO 2015 – All rights reserved

ISO/DIS 12234-3
Metadata name Description XMP name Type
Exposure index used
by the camera when
exif:ExposureIndex Rational
ExposureIndex the image was
captured
Class of camera
exposure program Closed choice of
exif:ExposureProgram
ExposureProgram used when the image integer
was captured.
Locations of faces in
the image, optionally
pxmp:Faces Structure
Faces includes the names of
the faces
Identifies whether the
Closed choice of
image is a pxmp:Favorites
Favorites integer
“favourite“ image
State of camera
illumination source
exif:Flash Structure
when the image was
Flash
captured.
Actual focal length of
the lens when the exif:FocalLength Rational
FocalLength
image was captured
Indicates the
equivalent focal length exif:
FocalLengthIn35mm Integer
assuming a 35mm film FocalLengthIn35mmFilm
Film
camera, in mm
Location of the
camera when the exif:GPS Structure
GPS
image was captured
Ratio of image width
pxmp:ImageAspect Rational
ImageAspectRatio to image height.
Title of the image dc:description LangeageAlternative
ImageDescription
Number of rows of
tiff:ImageLength
Integer
ImageLength
pixels in the image
The image position of
a series of captured
pxmp:ImageTileSet ImageTile
ImageTileSet images of 1-D or 2-D
panoramic series
Number of columns of
tiff:ImageWidth Integer
ImageWidth pixels in the image
Records the lens exifEX:LensMake
LensMake ProperName
manufacturer as an
ISO/DIS 12234-3
Metadata name Description XMP name Type
ASCII string.
Records the lens’s
model name and exifEX:LensModel
LensModel Text
model number as an
ASCII string.
Records the serial
number of the
interchangeable lens
exifEX:LensSerialNumber
Text
LensSerialNumber that was used in
photography as an
ASCII string.
notes minimum focal
length, maximum focal
length, minimum
f/number in the
minimum focal length,
and minimum
exifEX:LensSpecification Ordered array of
LensSpecification f/number in the
Rational
maximum focal length,
which are specification
information for the
lens that was used in
photography.
Light source which
illuminated the scene Closed choice of
exif:LightSource
that is depicted in the integers
LightSource
image file
Manufacturer of the
tiff:Make ProperName
Make digital camera used to
capture the image.
Smallest f/number of
exif:MaxApertureValue
MaxApertureValue
lens in aperture value, Rational
unit is APEX.
Mode used for
exposure metering Closed choice of
exif:MeteringMode
MeteringMode when the image was integer
captured.
Model name of the
tiff:Model ProperName
Model digital camera used to
capture the image.
the spectral capture
conditions of a pxmp:MultiSpectralCaptureSet MultiSpectral
MultiSpectralCaptureSet
multispectral image
set
Opto-Electronic
Conversion
exif:OECF OECF/ SFR
OECF Function as specified
in ISO 14524.
tiff:Orientation
Orientation Orientation of the Closed choice of
6 © ISO 2015 – All rights reserved

ISO/DIS 12234-3
Metadata name Description XMP name Type
captured image. integers
Measured average
luminance of the pxmp:SceneLuma Rational
SceneLuminance
scene
Seconds of self-timer
pxmp:Timer Integer
Self-TimerMode delay
Time value, unit is
exif:ShutterSpeedValue Rational
APEX.
ShutterSpeedValue
Version of the camera
firmware used by the
xmp:CreatorTool AgentName
Software digital camera which
captured the image.
Coordinates of the
Ordered array of
area of the main exif:SubjectArea
SubjectArea integers
subject in the image
Distance between
camera and the
subject in the scene exif:SubjectDistance Rational
SubjectDistance
on which the camera
is focused
Comments concerning
exif:UserComment
LanguageAlternative
UserComments the image
Table 3 below groups the metadata items listed in table 2 based on their attribution (such as xmp, tiff, dc, exif)
rather than in alphabetical order.
Table 3 — Category list
Category Metadata name XMP name
tiff:ImageWidth
TIFF/image data structure ImageWidth
ImageLength tiff:ImageLength
TIFF/image data structure
DateTime xmp:ModifyDate
TIFF/other
ImageDescription dc:description
TIFF/other
Make tiff:Make
TIFF/other
Model tiff:Model
TIFF/other
ISO/DIS 12234-3
Category Metadata name XMP name
Orientation tiff:Orientation
TIFF/other
Software xmp:CreatorTool
TIFF/other
Artist dc:creator
TIFF/other
Copyright dc:rights
TIFF/other
UserComments exif:UserComment
Exif/user information
DateTimeOriginal exif:DateTimeOriginal
Exif/date and time
DateTimeDigitized xmp:CreateDate
Exif/date and time
ExposureProgram exif:ExposureProgram
Exif/picture-taking conditions
OECF exif:OECF
Exif/picture-taking conditions
ShutterSpeedValue exif:ShutterSpeedValue
Exif/picture-taking conditions
ApertureValue exif:ApertureValue
Exif/picture-taking conditions
ExposureBiasValue exif:ExposureBiasValue
Exif/picture-taking conditions
MaxApertureValue exif:MaxApertureValue
Exif/picture-taking conditions
SubjecDistance exif:SubjectDistance
Exif/picture-taking conditions
MeteringMode exif:MeteringMode
Exif/picture-taking conditions
LightSource exif:LightSource
Exif/picture-taking conditions
Flash exif:Flash
Exif/picture-taking conditions
FocalLength exif:FocalLength
Exif/picture-taking conditions
Exif/picture-taking conditions FocalLengthIn35mmFilm exif:FocalLengthIn35mmFilm
SubjectArea exif:SubjectArea
Exif/picture-taking conditions
ExposureIndex exif:ExposureIndex
Exif/picture-taking conditions
CFAPattern exif:CFAPattern
Exif/picture-taking conditions
DigitalZoomRatio exif:DigitalZoomRatio
Exif/picture-taking conditions
CameraOwnerName exifEX:CameraOwnerName
Exif/other
BodySerialNumber exifEX:BodySerialNumber
Exif/other
LensModel exifEX:LensModel
Exif/other
LensSpecification exifEX:LensSpecification
Exif/other
LensMake exifEX:LensMake
Exif/other
8 © ISO 2015 – All rights reserved

ISO/DIS 12234-3
Category Metadata name XMP name
LensSerialNumber exifEX:LensSerialNumber
Exif/other
GPS exif:GPS
Exif/GPS
CaptureSet pxmp:CaptureSet
ISO12234-3
ColourEncoding pxmp:ColourEncoding
ISO12234-3
ISO12234-3 Editor Pxmp:Editor
ISO12234-3 Faces pxmp:Faces
ISO12234-3 Favorites pxmp:Favorites
ISO12234-3 ImageAspectRatio pxmp:ImageAspect
ISO12234-3 ImageTileSet pxmp:ImageTileSet
MultiSpectralCaptureSet pxmp:MultiSpectralCaptureSet
ISO12234-3
ISO12234-3 pxmp:SceneLuma
SceneLuminance
ISO12234-3 Self-TimerMode pxmp:Timer

6.2 Metadata definitions
6.2.1 ApertureValue
This property shall encode the actual lens aperture (Av) used when capturing the image using APEX notation. The
maximum value is 99.99, the minimum value is -1.0. In APEX units, a value of -1.0 corresponds to f/0.7, and a
value of 1.0 corresponds to f/1.4.
Photo XMP name: exif:ApertureValue (Rational)
NOTE (Rational), (Ordered array of ProperName) or (Text) etc. in the following clauses shows the value type of the
property.
6.2.2 Artist
This property shall encode the person(s) who captured the image, typically the camera owner. This property
is defined in Dublin Core (Dublin Core Metadata Element Set, Version 1.1
http://dublincore.org/documents/dces/) and the value type shall be Ordered array of ProperName. See clause
D.2.3.4 for ProperName value type.

Photo XMP name: dc:creator (Ordered array of ProperName)
6.2.3 BodySerialNumber
This property shall encode the serial number of the digital camera used to capture the image. The value shall
be an ASCII text string.
Photo XMP name: exifEX:BodySerialNumber. (Text)
ISO/DIS 12234-3
6.2.4 CameraOwnerName
This property shall encode the owner of a camera used in photography. The value type shall be ProperName
but the text shall be limited to ASCII string.
Photo XMP name: exifEX:CameraOwnerName (ProperName)

6.2.5 CaptureSet
This property shall encode the image position within a series of captured images typically used in generating a
derivative rendition such as focus series. Panoramic images are defined in clause 6.2.26, ImageTileSet.
The value type of the Capture Set metadata shall be a structured Capture Set (see Table 4) which includes a
mode, image identification number, and the total number of images in the series. This metadata can be used
to identify, for example, that an image is the 2nd image of 12 images in a focus series.
Photo XMP name: pxmp:CaptureSet (CaptureSet)
The values of Capture Set Fields shall be as listed table 4.
Table 4 — CaptureSet fields
Name Type Description
The capture set mode. One of:
0 = unknown
Closed choice of 1 = Time lapse series
pxmp:CaptureSetMode
Integer 2 = Exposure series
3 = Focus series
4 = Object rotation series
pxmp:CaptureSetID Integer Identification number of current image in capture set
pxmp:CaptureSetTotal Integer
Total number of images in capture set

6.2.6 CFAPattern
This property shall encode the actual colour filter array geometric pattern of the image sensor used to capture
the single-sensor colour image. The value type shall be CFAPattern (see clause D.2.4.1).
Photo XMP name: exif:CFAPattern (CFAPattern)

6.2.7 ColourEncoding
This property shall encode the colour encoding information. The value type shall be Closed Choice of Integers.
Photo XMP name: pxmp:ColourEncoding (Closed choice of integers)
10 © ISO 2015 – All rights reserved

ISO/DIS 12234-3
The ColourEncoding shall be one of the following values:
0 = Colour encoding is defined by an ICC colour profile included in the image file.
1 = sRGB as defined in IEC 61966-2-1
2 = Other as defined by the native metadata
6.2.8 Copyright
This property shall encode the copyright holder of the image and an optional copyright statement as defined in
the Dublin Core using a UCS string.
Photo XMP name: dc:rights (LanguageAlternative)

6.2.9 DateTimeDigitized
This property shall encode the date and time when the image was stored as digital data. The value shall be
stored according to ISO 8601 format. . The corresponding value type shall be Date (see D.2.2.2).
Photo XMP name: xmp:CreateDate (Date)

6.2.10 DateTimeOriginal
This property shall encode the date and time when the image was captured. It is normally provided using a
real-time clock in the digital camera. It may include a time-zone offset. For long exposure times and high
dynamic range imaging (HDR), the value should be the beginning of the first exposure.
Photo XMP name: exif:DateTimeOriginal (Date)

6.2.11 DateTime
This property shall encode the date and time that the image was last modified. It may include a time-zone
offset. If the image has not been modified after the capture date, the value shall be the same at the
DateTimeOriginal value. If the original image was stored as a “raw“ image and later processed using a “raw
converter“, the value should be the date and time that the “raw processing“ was performed unless the image
was modified afterwards.
Photo XMP name: xmp:ModifyDate. (Date)

6.2.12 DigitalZoomRatio
This property shall rencode the digital zoom ratio when the image was shot.
Photo XMP name: exif:DigitalZoomRatio (Rational)

ISO/DIS 12234-3
6.2.13 Editor
This property shall encode the name of the person(s) who modified the image after it was captured.  The
value type shall be Ordered array of ProperName. See clause D.2.3.4 for ProperName value type.

Photo XMP name: pxpm:editor (Ordered array of ProperName)

6.2.14 ExposureBiasValue
This property shall encode the number of stops by which the camera exposure is changed by the photographer or by the
camera exposure system from the value determined by the camera's exposure metering system to be the proper exposure
for the scene. The number of stops is specified using APEX notation. The range shall be between -99.99 and 99.99.
Photo XMP name: exif:ExposureBiasValue (Rational)

6.2.15 ExposureIndex
This property shall encode the exposure index used by the camera when the image was captured as defined using the
methods in ISO 12232, Photography — Digital still cameras — Determination of exposure index, ISO speed ratings,
standard output sensitivity, and recommended exposure index. It may be the exposure index and exposure bias set
manually by the photographer or automatically by the camera.
Photo XMP name: exif:ExposureIndex. (Rational)

6.2.16 ExposureProgram
This property shall encode the exposure mode and the program mode used when the image was captured.
Photo XMP name: exif:ExposureProgram. (Closed choice of integer)
The ExposureProgram shall be one of the following values:
0 = not defined
1 = Manual
2 = Normal program
3 = Aperture priority
4 = Shutter priority
5 = Creative program
6 = Action program
7 = Portrait mode
8 = Landscape mode
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ISO/DIS 12234-3
6.2.17 Faces
This property shall encode the names and / or the locations of faces in the image. The value type shall be
structured Faces defined in Table 5.
Photo XMP name: pxmp:Faces (Face)
The values of the structure shall be as listed table 5.
Table 5 — Faces fields
Name Type Description
pxmp:FaceName ProperName Name of person
Ordered array of
pxmp:FaceLocation X coordinate, Y coordinate and
...