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<lensdatabase version="1">
<cameras>
<!-- description of a camera, with or without interchangable lens -->
<!-- name of the camera, crop factor -->
<camera make="Canon" name="EOS 300D" cropfactor="1.6">
<!-- exif data required for recognition of the camera
The attributes contain all tags that need to be present
in the exif information and their value. The tag names
correspond to the ones output by exiv2.
A list of keys can be found at http://www.exiv2.org/metadata.html
-->
<exif key="Exif.Image.Make" value="Canon"/>
<exif key="Exif.Image.Model="Canon EOS 300D DIGITAL"/>
<!-- mount of the camera (used to identify matching lenses) -->
<mount>canonSLR</mount>
<mount>canonEfsSLR</mount>
<mount>genericSLR</mount>
<!-- a free from text field for misc annotations -->
<comment>Any annotation</comment>
</camera>
</cameras>
<!-- all lenses in this file -->
<lenses>
<!-- description of a lens. In case of multiple version, each version of a lens gets its
own lens entry -->
<lens
<!-- human readable name -->
name="Canon EF-S 10-22mm f/3.5-4.5 USM"
<!-- physical properties of the lens -->
min_fl="10"
max_fl="22"
max_aperture="3.5"
<!-- type of lens, either rectilinear or fisheye -->
type="rectilinear"
<!-- a rating (quality control passed or not). Possible categories are:
"not reviewed", "reviewed", "private" -->
status="reviewed"
<!-- Cropfactor of the the camera that has been used for calibration -->
calib_cropfactor="1.6"
>
<!-- mount(s) of a lens (ie. the type of cameras it can be mounted on) -->
<mount>canonEfsSLR</mount>
<!-- serial number range (for lenses with same name but different
properties, not required) -->
<serial number="300" min="1" max="1000">
<!-- arbitrary user comment -->
<comment>Calibration from PTLens database</comment>
<!-- Exif data useful for recognizing the lens.
If all tags below can be found, the lens is known. If there are tags
that can be used to automatically disambiguated -->
<exif key="Exif.Photo.MaxApertureValue" type="rational" value="3.5"/>
<!-- Lens identifier in canon metadata -->
<exif key="Exif.CanonCs.Lens" type="short" value="22 10 1"/>
<!-- person calibrating the lens -->
<author>Author</author>
<!-- arbitrary user comment -->
<comment></comment>
<!-- correction coefficients for each focal length
<calibration focallength="10">
<!-- radial distortion correction parameters, panotools model -->
<distortion a="0.02" b="-0.012" c="0">
<!-- transverse chromatic abberation correction -->
<tcaRed a="0" b="0" c="0" d="0">
<tcaBlue a="0" b="0" c="0" d="0">
<!-- aperture specific calibration values (vignetting) -->
<calibration aperture="3.5">
<vignetting b="-0.1" c="-0.2 d="0">
</calibration>
<calibration aperture="8">
<vignetting b="-0.1" c="-0.2 d="-0.3">
</calibration>
<calibration aperture="22">
<vignetting b="-0.1" c="-0.2 d="0">
</calibration>
</calibration>
<calibration focallength="14">
<distortion a="0.003" b="-0.001" c="0">
<tcaRed a="0" b="0" c="0" d="0">
<tcaBlue a="0" b="0" c="0" d="0">
<calibration aperture="4">
<vignetting b="-0.1" c="-0.2 d="0">
</calibration>
<calibration aperture="8">
<vignetting b="-0.1" c="-0.2 d="-0.3">
</calibration>
<calibration aperture="22">
<vignetting b="-0.1" c="-0.2 d="0">
</calibration>
</calibration>
<calibration focallength="22">
<!-- some more data -->
</calibration>
</lens>
</lenses>

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