EXIF - Revision history

Erik Krause: Prepared for new glossary template

2007-11-17T22:24:37Z

Prepared for new glossary template

Imroy: copyedit

2007-09-24T13:46:40Z

copyedit

WikiSysop: 6 revision(s)

2006-07-13T20:24:33Z

6 revision(s)

WikiSysop: 1 revision(s)

2006-07-13T19:55:17Z

1 revision(s)

Rogerhoward at 20:38, 19 June 2006

2006-06-19T20:38:24Z

Rogerhoward at 20:38, 19 June 2006

2006-06-19T20:38:24Z

New page

EXIF stands for Exchangeable Image File Format. It allows camera, lens, exposure information, image description, copyright, etc. to be embedded in standardized fields within JFIF ([[JPEG]]) or TIFF image files. EXIF is a de facto standard promoted by the camera industry as a means to store metadata recorded by a digital camera, and is not intended as a general-purpose metadata storage mechanism. [[XMP]] is a more generalized format for storing arbitrary metadata in a variety of media file formats.

EXIF metadata is used by stitching products such as [[PTGUI]] to make assumptions about the camera (sensor) and lens used to shoot a given image. This information is used to set defaults for the [[Field of View]] and [[Cropping Factor]] for stitching projects. These defaults are typically used only as a starting point, and are refined through the [[optimization]] process.

For more detailed information, see the home page for [http://www.sno.phy.queensu.ca/~phil/exiftool/ ExifTool], especially the tables of [http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/index.html ExifTool Tag Names] and [http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/EXIF.html EXIF Tags].

As you'll note from the ExifTool pages above, there are many redundant fields due to different manufacturers defining unique fields for semantically identical information, as well as fields which are intended to store manufacturer-specific metadata. Many of these fields are undocumented, at least as far as the public is concerned, and so there is much energy in the industry devoted to decoding these unique fields, their semantics and their constraints.

While EXIF is not generally intended to be user editable, there are a large number of tools that are capable of editing EXIF metadata with varying degrees of support for the huge variety of fields found in real-world EXIF files.

[http://www.sno.phy.queensu.ca/~phil/exiftool/ ExifTool] is free software that allows manipulation of EXIF and related data in many different kinds of files. ExifTool is one of the most comprehensive EXIF editors available, and continues to grow the number and depth of support for undocumented EXIF metadata, as well as adding support for other (non-EXIF) file formats and metadata structures.

[[photomolo]] is a free tool for lossless rotation of [[JPEG]] images and updating the '''EXIF''' tag appropriately.
[[Category:Glossary]]

Rogerhoward at 20:35, 19 June 2006

2006-06-19T20:35:25Z

Bruno: categorised

2005-11-11T12:16:41Z

categorised

Bruno: link to photomolo and jpeg pages

2005-05-03T17:32:03Z

link to photomolo and jpeg pages

Rjlittlefield at 00:44, 2 May 2005

2005-05-02T00:44:46Z

← Older revision		Revision as of 22:24, 17 November 2007
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		+	{{Glossary\|Exchangeable Image File Format. EXIF data allows camera, lens, exposure information, image description, copyright, etc. to be embedded in an image file.}}
	The '''Exchangeable Image File Format''' (EXIF) allows camera, lens, exposure information, image description, copyright, etc. to be embedded in standardized fields within JFIF ([[JPEG]]) or TIFF image files. EXIF is a de facto standard promoted by the camera industry as a means to store metadata recorded by a digital camera, and is not intended as a general-purpose metadata storage mechanism. [[XMP]] is a more generalized format for storing arbitrary metadata in a variety of media file formats.		The '''Exchangeable Image File Format''' (EXIF) allows camera, lens, exposure information, image description, copyright, etc. to be embedded in standardized fields within JFIF ([[JPEG]]) or TIFF image files. EXIF is a de facto standard promoted by the camera industry as a means to store metadata recorded by a digital camera, and is not intended as a general-purpose metadata storage mechanism. [[XMP]] is a more generalized format for storing arbitrary metadata in a variety of media file formats.

@@ Line 1: / Line 1: @@
-EXIF stands for Exchangeable Image File Format.  It allows camera, lens, exposure information, image description, copyright, etc. to be embedded in an image file (typically a [[JPEG]] image).
+EXIF stands for Exchangeable Image File Format.  It allows camera, lens, exposure information, image description, copyright, etc. to be embedded in standardized fields within JFIF ([[JPEG]]) or TIFF image files. EXIF is a de facto standard promoted by the camera industry as a means to store metadata recorded by a digital camera, and is not intended as a general-purpose metadata storage mechanism. [[XMP]] is a more generalized format for storing arbitrary metadata in a variety of media file formats.
 For more detailed information, see the home page for [http://www.sno.phy.queensu.ca/~phil/exiftool/ ExifTool], especially the tables of [http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/index.html ExifTool Tag Names] and [http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/EXIF.html EXIF Tags].
-[http://www.sno.phy.queensu.ca/~phil/exiftool/ ExifTool] is free software that allows manipulation of EXIF and related data in many different kinds of files.
+As you'll note from the ExifTool pages above, there are many redundant fields due to different manufacturers defining unique fields for semantically identical information, as well as fields which are intended to store manufacturer-specific metadata. Many of these fields are undocumented, at least as far as the public is concerned, and so there is much energy in the industry devoted to decoding these unique fields, their semantics and their constraints.
-A caution: at [http://groups.yahoo.com/group/PanoTools/message/16780], it is written that
+While EXIF is not generally intended to be user editable, there are a large number of tools that are capable of editing EXIF metadata with varying degrees of support for the huge variety of fields found in real-world EXIF files.
-  when editing camera data in Photoshop it doesn't edit EXIF fields -
+[http://www.sno.phy.queensu.ca/~phil/exiftool/ ExifTool] is free software that allows manipulation of EXIF and related data in many different kinds of files. ExifTool is one of the most comprehensive EXIF editors available, and continues to grow the number and depth of support for undocumented EXIF metadata, as well as adding support for other (non-EXIF) file formats and metadata structures.
-  it stores any changes in XMP, which would explain why other tools
-  aren't reading the EXIF properly (it's not actually there!).
-−
-  The best solution is to use ExifTool to copy your camera data
-  from a source file into any files that need it... it's a very
-  simple operation to batch in either EXIFUtils or ExifTool.
 [[photomolo]] is a free tool for lossless rotation of [[JPEG]] images and updating the '''EXIF''' tag appropriately.
 [[Category:Glossary]]

← Older revision		Revision as of 12:16, 11 November 2005
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	[[photomolo]] is a free tool for lossless rotation of [[JPEG]] images and updating the '''EXIF''' tag appropriately.		[[photomolo]] is a free tool for lossless rotation of [[JPEG]] images and updating the '''EXIF''' tag appropriately.
		+	[[Category:Glossary]]

@@ Line 1: / Line 1: @@
-EXIF stands for Exchangeable Image File Format.  It allows camera, lens, exposure information, image description, copyright, etc. to be embedded in an image file.
+EXIF stands for Exchangeable Image File Format.  It allows camera, lens, exposure information, image description, copyright, etc. to be embedded in an image file (typically a [[JPEG]] image).
 For more detailed information, see the home page for [http://www.sno.phy.queensu.ca/~phil/exiftool/ ExifTool], especially the tables of [http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/index.html ExifTool Tag Names] and [http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/EXIF.html EXIF Tags].
@@ Line 14: / Line 14: @@
    from a source file into any files that need it... it's a very
    simple operation to batch in either EXIFUtils or ExifTool.

← Older revision		Revision as of 00:44, 2 May 2005
Line 4:		Line 4:

	[http://www.sno.phy.queensu.ca/~phil/exiftool/ ExifTool] is free software that allows manipulation of EXIF and related data in many different kinds of files.		[http://www.sno.phy.queensu.ca/~phil/exiftool/ ExifTool] is free software that allows manipulation of EXIF and related data in many different kinds of files.
		+
		+	A caution: at [http://groups.yahoo.com/group/PanoTools/message/16780], it is written that
		+
		+	when editing camera data in Photoshop it doesn't edit EXIF fields -
		+	it stores any changes in XMP, which would explain why other tools
		+	aren't reading the EXIF properly (it's not actually there!).
		+
		+	The best solution is to use ExifTool to copy your camera data
		+	from a source file into any files that need it... it's a very
		+	simple operation to batch in either EXIFUtils or ExifTool.

← Older revision	Revision as of 20:24, 13 July 2006
(One intermediate revision by one user not shown)

← Older revision		Revision as of 20:38, 19 June 2006
Line 1:		Line 1:
	EXIF stands for Exchangeable Image File Format. It allows camera, lens, exposure information, image description, copyright, etc. to be embedded in standardized fields within JFIF ([[JPEG]]) or TIFF image files. EXIF is a de facto standard promoted by the camera industry as a means to store metadata recorded by a digital camera, and is not intended as a general-purpose metadata storage mechanism. [[XMP]] is a more generalized format for storing arbitrary metadata in a variety of media file formats.		EXIF stands for Exchangeable Image File Format. It allows camera, lens, exposure information, image description, copyright, etc. to be embedded in standardized fields within JFIF ([[JPEG]]) or TIFF image files. EXIF is a de facto standard promoted by the camera industry as a means to store metadata recorded by a digital camera, and is not intended as a general-purpose metadata storage mechanism. [[XMP]] is a more generalized format for storing arbitrary metadata in a variety of media file formats.
		+
		+	EXIF metadata is used by stitching products such as [[PTGUI]] to make assumptions about the camera (sensor) and lens used to shoot a given image. This information is used to set defaults for the [[Field of View]] and [[Cropping Factor]] for stitching projects. These defaults are typically used only as a starting point, and are refined through the [[optimization]] process.

	For more detailed information, see the home page for [http://www.sno.phy.queensu.ca/~phil/exiftool/ ExifTool], especially the tables of [http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/index.html ExifTool Tag Names] and [http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/EXIF.html EXIF Tags].		For more detailed information, see the home page for [http://www.sno.phy.queensu.ca/~phil/exiftool/ ExifTool], especially the tables of [http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/index.html ExifTool Tag Names] and [http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/EXIF.html EXIF Tags].