<!DOCTYPE lensdatabase SYSTEM "lensfun-database.dtd">
<lensdatabase version="2">

    <lens>
        <maker>Zeiss</maker>
        <model>Carl Zeiss Distagon T* 2/35 ZF.2</model>
        <mount>Nikon F AI-S</mount>
        <cropfactor>1</cropfactor>
        <calibration>
            <!-- Taken with Nikon D3 -->
            <distortion model="ptlens" focal="35" a="0.00786" b="-0.02862" c="0.01911"/>
            <tca model="poly3" focal="35" vr="1.0001515" vb="1.0001430"/>
            <vignetting model="pa" focal="35" aperture="2" distance="10" k1="-1.9515" k2="2.1666" k3="-0.9851"/>
            <vignetting model="pa" focal="35" aperture="2" distance="1000" k1="-1.9515" k2="2.1666" k3="-0.9851"/>
            <vignetting model="pa" focal="35" aperture="2.8" distance="10" k1="-1.2284" k2="0.5638" k3="-0.0563"/>
            <vignetting model="pa" focal="35" aperture="2.8" distance="1000" k1="-1.2284" k2="0.5638" k3="-0.0563"/>
            <vignetting model="pa" focal="35" aperture="4" distance="10" k1="-0.2027" k2="-0.7027" k3="0.3671"/>
            <vignetting model="pa" focal="35" aperture="4" distance="1000" k1="-0.2027" k2="-0.7027" k3="0.3671"/>
            <vignetting model="pa" focal="35" aperture="5.6" distance="10" k1="-0.4527" k2="0.3264" k3="-0.2138"/>
            <vignetting model="pa" focal="35" aperture="5.6" distance="1000" k1="-0.4527" k2="0.3264" k3="-0.2138"/>
            <vignetting model="pa" focal="35" aperture="22" distance="10" k1="-0.4222" k2="0.1561" k3="-0.0315"/>
            <vignetting model="pa" focal="35" aperture="22" distance="1000" k1="-0.4222" k2="0.1561" k3="-0.0315"/>
        </calibration>
    </lens>

    <lens>
        <!-- Also update copy at "Carl Zeiss Distagon T* 2,8/21 ZE" below. -->
        <maker>Zeiss</maker>
        <model>Carl Zeiss Distagon T* 2,8/21 ZF.2</model>
        <mount>Nikon F AI-S</mount>
        <cropfactor>1</cropfactor>
        <calibration>
            <!-- Taken with Nikon D800E -->
            <distortion model="ptlens" focal="21" a="0.03083" b="-0.0633" c="0.01093"/>
            <tca model="linear" focal="21" kr="1.0001" kb="1.0001"/>
        </calibration>
    </lens>

    <lens>
        <!-- Also update copy at "Carl Zeiss Distagon T* 2,8/21 ZF.2" above. -->
        <maker>Zeiss</maker>
        <model>Carl Zeiss Distagon T* 2,8/21 ZE</model>
        <mount>Canon EF</mount>
        <cropfactor>1</cropfactor>
        <calibration>
            <distortion model="ptlens" focal="21" a="0.03083" b="-0.0633" c="0.01093"/>
            <tca model="linear" focal="21" kr="1.0001" kb="1.0001"/>
        </calibration>
    </lens>

    <lens>
        <maker>Zeiss</maker>
        <model>Carl Zeiss Jena 1Q Biotar 1:2 f=58mm T</model>
        <mount>M42</mount>
        <cropfactor>1.538</cropfactor>
        <calibration>
            <!-- Taken with Pentax K20D -->
            <distortion model="poly3" focal="58" k1="0.0017"/>
            <tca model="poly3" focal="58" vr="0.9999881" vb="0.9999867"/>
        </calibration>
    </lens>

    <lens>
        <maker>Zeiss</maker>
        <model>Zeiss Distagon T* 25mm f/2.8 ZF.2</model>
        <mount>Nikon F AI-S</mount>
        <cropfactor>1</cropfactor>
        <calibration>
            <!-- Taken with Nikon D810 -->
            <vignetting model="pa" focal="25" aperture="2.8" distance="10" k1="-2.0722" k2="2.3741" k3="-1.0791"/>
            <vignetting model="pa" focal="25" aperture="2.8" distance="1000" k1="-2.0722" k2="2.3741" k3="-1.0791"/>
            <vignetting model="pa" focal="25" aperture="4" distance="10" k1="-0.4967" k2="-0.4770" k3="0.3717"/>
            <vignetting model="pa" focal="25" aperture="4" distance="1000" k1="-0.4967" k2="-0.4770" k3="0.3717"/>
            <vignetting model="pa" focal="25" aperture="5.6" distance="10" k1="-0.6803" k2="0.4196" k3="-0.1860"/>
            <vignetting model="pa" focal="25" aperture="5.6" distance="1000" k1="-0.6803" k2="0.4196" k3="-0.1860"/>
            <vignetting model="pa" focal="25" aperture="8" distance="10" k1="-0.6634" k2="0.3401" k3="-0.1020"/>
            <vignetting model="pa" focal="25" aperture="8" distance="1000" k1="-0.6634" k2="0.3401" k3="-0.1020"/>
            <vignetting model="pa" focal="25" aperture="22" distance="10" k1="-0.6497" k2="0.2995" k3="-0.0740"/>
            <vignetting model="pa" focal="25" aperture="22" distance="1000" k1="-0.6497" k2="0.2995" k3="-0.0740"/>
        </calibration>
    </lens>

</lensdatabase>
