<h1>Exif MakerNote Formats and Specifications</h1>
<p>The following table summarizes the structures of the MakerNote field used by
different vendors.</p>
<tablewidth="100%"border="1">
<h1>Exif metadata manipulation library and tools</h1>
<h2>MakerNote Formats and Specifications</h2>
<p>According to the <atitle="The Exif 2.2 standard (PDF)"href="http://tsc.jeita.or.jp/avs/data/cp3451.pdf">Exif 2.2 standard</a>, the makernote is <i>"a tag for manufacturers of Exif writers to record any desired information. The contents are up to the manufacturer, but this tag should not be used for any other than its intended purpose."</i> Many (but not all) vendors write the makernote in IFD (Image File Directory) format, i.e., in the same format as the rest of the Exif information is encoded. Many manufacturers apparently store a lot of information in the makernote field but unfortunately, most vendors do not publish their specifications.</p>
<p>The following table summarizes the structures of the MakerNote field used by some vendors.</p>
<title>Canon MakerNote Tags defined in Exiv2</title>
<text>
<p>Tags found in the MakerNote of images taken with Canon cameras. These tags are defined by Exiv2 in accordance with <ahref="makernote.html#R5">[5]</a>.</p>
<p>Click on a column header to sort the table.</p>
<title>Fujifilm MakerNote Tags defined in Exiv2</title>
<text>
<p>Tags found in the MakerNote of images taken with Fujifilm cameras. These tags are defined by Exiv2 in accordance with <ahref="makernote.html#R1">[1]</a>.</p>
<p>Click on a column header to sort the table.</p>
<title>Sigma/Foveon MakerNote Tags defined in Exiv2</title>
<text>
<p>Tags found in the MakerNote of images taken with Sigma/Foveon cameras. These tags are defined by Exiv2 in accordance with <ahref="makernote.html#R7">[7]</a>.</p>
<p>Click on a column header to sort the table.</p>
<p>These are the Exif tags as defined in the <atitle="The Exif 2.2 standard (PDF)"href="http://tsc.jeita.or.jp/avs/data/cp3451.pdf">Exif 2.2 standard</a>.</p>
<p>IFD1 tags are not listed seperately. All IFD0 tags may also be present in IFD1, according to the standard. The first part of the Exiv2 key of an IFD1 tag is <i>Thumbnail</i> (instead of <i>Image</i>), the other two parts of the key are the same as for IFD0 tags.</p>
<p>Click on a column header to sort the table.</p>