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/usr/share/lensfun/version_1/slr-vivitar.xml is in liblensfun-data-v1 0.3.2-4.

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The actual contents of the file can be viewed below.

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<lensdatabase version="1">

    <lens>
        <maker>Vivitar</maker>
        <model>Vivitar 100mm f/3.5 AF Macro</model>
        <mount>Canon EF</mount>
        <mount>Sony Alpha</mount>
        <mount>Nikon F AF</mount>
        <cropfactor>1.523</cropfactor>
        <calibration>
            <!-- Taken with Sony Alpha 55V -->
            <distortion model="poly3" focal="100" k1="0.00072" />
            <!-- No measurable TCA -->
            <tca model="poly3" focal="100" />
        </calibration>
    </lens>

    <lens>
        <!-- This lens is available in five variants, see
             <http://www.robertstech.com/vivitar.htm>.  This web site suggests
             that variants 4 and 5 are optically equivalent.  The other
             versions must definitely be considered different from each
             other. -->
        <maker>Vivitar</maker>
        <!-- FixMe: "One" should be "1" once
             https://sourceforge.net/p/lensfun/bugs/35 is fixed. -->
        <model>Vivitar Series One 70-210mm 1:3.5 SN 22...</model>
        <model lang="en">Vivitar Series 1 70-210mm 1:3.5 SN 22…</model>
        <mount>Nikon F</mount>
        <mount>Pentax K</mount>
        <mount>Canon FD</mount>
        <mount>Canon FL</mount>
        <mount>Olympus OM</mount>
        <mount>M42</mount>
        <cropfactor>1.534</cropfactor>
        <focal min="70" max="210" />
        <aperture min="3.5" max="22" />
        <calibration>
            <!-- Taken with Sony A6000 -->
            <distortion model="poly3" focal="70" k1="-0.00183" />
            <distortion model="poly3" focal="85" k1="-0.00025" />
            <distortion model="poly3" focal="210" k1="0.00324" />
            <tca model="poly3" focal="70" vr="1.0001457" vb="0.9998911" />
            <tca model="poly3" focal="85" vr="1.0000626" vb="0.9999076" />
            <tca model="poly3" focal="135" vr="0.9998391" vb="0.9999724" />
            <tca model="poly3" focal="180" vr="0.9995820" vb="1.0000310" />
            <tca model="poly3" focal="210" vr="0.9994685" vb="1.0000417" />
        </calibration>
    </lens>

</lensdatabase>