<lensdatabase>

    <mount>
        <name>Sigma</name>
        <compat>Generic</compat>
    </mount>

    <camera>
        <maker>SIGMA</maker>
        <maker lang="en">Sigma</maker>
        <model>SIGMA SD9</model>
        <model lang="en">SD9</model>
        <mount>Sigma</mount>
        <cropfactor>1.7</cropfactor>
    </camera>

    <camera>
        <maker>SIGMA</maker>
        <maker lang="en">Sigma</maker>
        <model>SIGMA SD10</model>
        <model lang="en">SD10</model>
        <mount>Sigma</mount>
        <cropfactor>1.7</cropfactor>
    </camera>

    <camera>
        <maker>SIGMA</maker>
        <maker lang="en">Sigma</maker>
        <model>SIGMA SD14</model>
        <model lang="en">SD14</model>
        <mount>Sigma</mount>
        <cropfactor>1.7</cropfactor>
    </camera>

    <camera>
        <maker>SIGMA</maker>
        <maker lang="en">Sigma</maker>
        <model>SIGMA SD15</model>
        <model lang="en">SD15</model>
        <mount>Sigma</mount>
        <cropfactor>1.7</cropfactor>
    </camera>

    <lens>
        <maker>Sigma</maker>
        <model>Sigma 10-20mm f/4-5.6 EX DC</model>
        <mount>Sigma</mount>
        <mount>Canon EF-S</mount>
        <mount>Nikon F AF</mount>
        <mount>Pentax KAF</mount>
        <cropfactor>1.5</cropfactor>
        <calibration>
            <distortion model="ptlens" focal="10" a="-0.017985" b="0.026145" c="0" />
            <distortion model="ptlens" focal="12" a="-0.008171" b="0.018035" c="0" />
            <distortion model="ptlens" focal="14" a="0" b="0.005868" c="0" />
            <distortion model="ptlens" focal="17" a="0" b="0.006362" c="0" />
            <distortion model="ptlens" focal="20" a="0" b="0.005077" c="0" />
        </calibration>
    </lens>

    <lens>
        <maker>Sigma</maker>
        <model>Sigma 12-24mm f/4.5-5.6 EX DG</model>
        <mount>Sigma</mount>
        <mount>Canon EF</mount>
        <mount>Nikon F AF</mount>
        <mount>Pentax KAF</mount>
        <cropfactor>1.0</cropfactor>
        <calibration>
            <distortion model="ptlens" focal="12" a="0.004893" b="-0.019407" c="0" />
            <distortion model="ptlens" focal="15" a="0.005113" b="-0.014337" c="0" />
            <distortion model="ptlens" focal="17" a="0.005379" b="-0.013087" c="0" />
            <distortion model="ptlens" focal="19" a="0.006028" b="-0.012828" c="0" />
            <distortion model="ptlens" focal="21" a="0.00375" b="-0.007426" c="0" />
            <distortion model="ptlens" focal="24" a="0.002951" b="-0.004156" c="0" />
        </calibration>
    </lens>

    <lens>
        <maker>Sigma</maker>
        <model>Sigma 15-30mm f/3.5-4.5 EX DG</model>
        <mount>Sigma</mount>
        <mount>Canon EF</mount>
        <mount>Nikon F AF</mount>
        <mount>Pentax KAF</mount>
        <cropfactor>1.6</cropfactor>
        <calibration>
            <distortion model="ptlens" focal="15" a="0.009928" b="-0.033322" c="0" />
            <distortion model="ptlens" focal="17" a="0.006714" b="-0.023166" c="0" />
            <distortion model="ptlens" focal="18" a="0.00878" b="-0.025329" c="0" />
            <distortion model="ptlens" focal="20" a="0.010135" b="-0.026175" c="0" />
            <distortion model="ptlens" focal="23" a="0.007144" b="-0.018882" c="0" />
            <distortion model="ptlens" focal="25" a="0.009469" b="-0.02075" c="0" />
            <distortion model="ptlens" focal="26" a="0.008222" b="-0.017584" c="0" />
            <distortion model="ptlens" focal="28" a="0.006456" b="-0.012099" c="0" />
            <distortion model="ptlens" focal="30" a="0.004942" b="-0.008935" c="0" />
        </calibration>
    </lens>

    <lens>
        <maker>Sigma</maker>
        <model>Sigma 17-35mm f/2.8-4 EX DG</model>
        <mount>Sigma</mount>
        <mount>Canon EF</mount>
        <mount>Nikon F AF</mount>
        <mount>Pentax KAF</mount>
        <cropfactor>1.5</cropfactor>
        <calibration>
            <distortion model="ptlens" focal="17" a="0.007263" b="-0.02454" c="0" />
            <distortion model="ptlens" focal="20" a="0.006421" b="-0.021536" c="0" />
            <distortion model="ptlens" focal="24" a="0.008849" b="-0.023843" c="0" />
            <distortion model="ptlens" focal="28" a="0" b="-0.004158" c="0" />
            <distortion model="ptlens" focal="35" a="0" b="-0.002715" c="0" />
        </calibration>
    </lens>

    <lens>
        <maker>Sigma</maker>
        <model>Sigma 17-70mm f/2.8-4.5 DC Macro</model>
        <mount>Sigma</mount>
        <mount>Canon EF</mount>
        <mount>Nikon F AF</mount>
        <mount>Pentax KAF</mount>
        <cropfactor>1.6</cropfactor>
        <calibration>
            <distortion model="ptlens" focal="17" a="0.019088" b="-0.048894" c="0" />
            <distortion model="ptlens" focal="19" a="0.010938" b="-0.030356" c="0" />
            <distortion model="ptlens" focal="23" a="0.01063" b="-0.026746" c="0" />
            <distortion model="ptlens" focal="25" a="0.001877" b="-0.005367" c="0" />
            <distortion model="ptlens" focal="30" a="-0.001844" b="0.003931" c="0" />
            <distortion model="ptlens" focal="40" a="-0.002705" b="0.008106" c="0" />
            <distortion model="ptlens" focal="53" a="0" b="0.003542" c="0" />
            <distortion model="ptlens" focal="70" a="0" b="0.003858" c="0" />
        </calibration>
    </lens>

    <lens>
        <maker>Sigma</maker>
        <model>Sigma 18-50mm f/2.8 EX DC</model>
        <mount>Sigma</mount>
        <mount>Canon EF</mount>
        <mount>Nikon F AF</mount>
        <mount>Pentax KAF</mount>
        <cropfactor>1.5</cropfactor>
        <calibration>
            <distortion model="ptlens" focal="18" a="0.012979" b="-0.036394" c="0" />
            <distortion model="ptlens" focal="23" a="0.007147" b="-0.017687" c="0" />
            <distortion model="ptlens" focal="28" a="0" b="0" c="0" />
            <distortion model="ptlens" focal="34" a="0" b="0.001032" c="0" />
            <distortion model="ptlens" focal="50" a="0" b="0.002512" c="0" />
        </calibration>
    </lens>

    <lens>
        <maker>Sigma</maker>
        <model>Sigma 18-50mm f/2.8 EX DC</model>
        <mount>Sigma</mount>
        <mount>Canon EF</mount>
        <mount>Nikon F AF</mount>
        <mount>Pentax KAF</mount>
        <cropfactor>1.6</cropfactor>
        <calibration>
            <distortion model="ptlens" focal="18" a="0.011366" b="-0.034328" c="0" />
            <distortion model="ptlens" focal="21" a="0.006142" b="-0.017401" c="0" />
            <distortion model="ptlens" focal="24" a="0.0048" b="-0.013589" c="0" />
            <distortion model="ptlens" focal="28" a="0" b="0" c="0" />
            <distortion model="ptlens" focal="35" a="0" b="0.002094" c="0" />
            <distortion model="ptlens" focal="43" a="0" b="0.002878" c="0" />
            <distortion model="ptlens" focal="50" a="0" b="0.003021" c="0" />
        </calibration>
    </lens>

    <lens>
        <maker>Sigma</maker>
        <model>Sigma 18-50mm f/3.5-5.6 DC</model>
        <mount>Sigma</mount>
        <mount>Canon EF</mount>
        <mount>Nikon F AF</mount>
        <mount>Pentax KAF</mount>
        <cropfactor>1.6</cropfactor>
        <calibration>
            <distortion model="ptlens" focal="18" a="0.018244" b="-0.048901" c="0" />
            <distortion model="ptlens" focal="20" a="0.013163" b="-0.038177" c="0" />
            <distortion model="ptlens" focal="22" a="0.008797" b="-0.028701" c="0" />
            <distortion model="ptlens" focal="26" a="0.004579" b="-0.017014" c="0" />
            <distortion model="ptlens" focal="30" a="0.002405" b="-0.011562" c="0" />
            <distortion model="ptlens" focal="34" a="0.002363" b="-0.00852" c="0" />
            <distortion model="ptlens" focal="39" a="0" b="-0.002352" c="0" />
            <distortion model="ptlens" focal="44" a="0" b="-0.002108" c="0" />
            <distortion model="ptlens" focal="50" a="0" b="-0.00147" c="0" />
        </calibration>
    </lens>

    <lens>
        <maker>Sigma</maker>
        <model>Sigma 18-125mm f/3.5-5.6 (3.3-5.6) DC</model>
        <mount>Sigma</mount>
        <mount>Canon EF</mount>
        <mount>Nikon F AF</mount>
        <mount>Pentax KAF</mount>
        <cropfactor>1.6</cropfactor>
        <calibration>
            <distortion model="ptlens" focal="18" a="0.02211" b="-0.050462" c="0" />
            <distortion model="ptlens" focal="23" a="0.016565" b="-0.027307" c="0" />
            <distortion model="ptlens" focal="30" a="0.011429" b="-0.013359" c="0" />
            <distortion model="ptlens" focal="38" a="0" b="0.012386" c="0" />
            <distortion model="ptlens" focal="51" a="0" b="0.013262" c="0" />
            <distortion model="ptlens" focal="67" a="0" b="0.011758" c="0" />
            <distortion model="ptlens" focal="87" a="0" b="0.011008" c="0" />
            <distortion model="ptlens" focal="109" a="0" b="0.01145" c="0" />
            <distortion model="ptlens" focal="125" a="0" b="0.009078" c="0" />
        </calibration>
    </lens>

    <lens>
        <maker>Sigma</maker>
        <model>Sigma 18-125mm f/3.5-5.6 (3.3-5.6) DC</model>
        <mount>Sigma</mount>
        <mount>Canon EF</mount>
        <mount>Nikon F AF</mount>
        <mount>Pentax KAF</mount>
        <cropfactor>1.5</cropfactor>
        <calibration>
            <distortion model="ptlens" focal="18" a="0.028249" b="-0.061326" c="0" />
            <distortion model="ptlens" focal="26" a="0.008998" b="-0.008014" c="0" />
            <distortion model="ptlens" focal="38" a="0.004437" b="0.005654" c="0" />
            <distortion model="ptlens" focal="60" a="0" b="0.011257" c="0" />
            <distortion model="ptlens" focal="100" a="0" b="0.011071" c="0" />
            <distortion model="ptlens" focal="125" a="0" b="0.010822" c="0" />
        </calibration>
    </lens>

    <lens>
        <maker>Sigma</maker>
        <model>Sigma 18-200mm f/3.5-6.3 DC</model>
        <mount>Sigma</mount>
        <mount>Canon EF</mount>
        <mount>Nikon F AF</mount>
        <mount>Pentax KAF</mount>
        <cropfactor>1.5</cropfactor>
        <calibration>
            <distortion model="ptlens" focal="18" a="0.027521" b="-0.063244" c="0" />
            <distortion model="ptlens" focal="22" a="0.016154" b="-0.029806" c="0" />
            <distortion model="ptlens" focal="26" a="0.014824" b="-0.025689" c="0" />
            <distortion model="ptlens" focal="34" a="0.011421" b="-0.011743" c="0" />
            <distortion model="ptlens" focal="46" a="0" b="0.014338" c="0" />
            <distortion model="ptlens" focal="78" a="0" b="0.009621" c="0" />
            <distortion model="ptlens" focal="135" a="0" b="0.012591" c="0" />
            <distortion model="ptlens" focal="200" a="0" b="0.011133" c="0" />
        </calibration>
    </lens>

    <lens>
        <maker>Sigma</maker>
        <model>Sigma 18-200mm f/3.5-6.3 DC</model>
        <mount>Sigma</mount>
        <mount>Canon EF</mount>
        <mount>Nikon F AF</mount>
        <mount>Pentax KAF</mount>
        <cropfactor>1.6</cropfactor>
        <calibration>
            <distortion model="ptlens" focal="18" a="0.018238" b="-0.045992" c="0" />
            <distortion model="ptlens" focal="21" a="0.013683" b="-0.026594" c="0" />
            <distortion model="ptlens" focal="24" a="0.007113" b="-0.008911" c="0" />
            <distortion model="ptlens" focal="33" a="0" b="0.010791" c="0" />
            <distortion model="ptlens" focal="59" a="0" b="0.012006" c="0" />
            <distortion model="ptlens" focal="88" a="0" b="0.010958" c="0" />
            <distortion model="ptlens" focal="144" a="0" b="0.008752" c="0" />
            <distortion model="ptlens" focal="200" a="0" b="0.00739" c="0" />
        </calibration>
    </lens>

    <lens>
        <maker>Sigma</maker>
        <model>Sigma 24-70mm f/2.8 EX DG Macro</model>
        <mount>Sigma</mount>
        <mount>Canon EF</mount>
        <mount>Nikon F AF</mount>
        <mount>Pentax KAF</mount>
        <cropfactor>1.6</cropfactor>
        <calibration>
            <distortion model="ptlens" focal="24" a="0" b="-0.006096" c="0" />
            <distortion model="ptlens" focal="30" a="0" b="-0.001546" c="0" />
            <distortion model="ptlens" focal="36" a="0" b="0.001392" c="0" />
            <distortion model="ptlens" focal="42" a="0" b="0.002318" c="0" />
            <distortion model="ptlens" focal="52" a="0" b="0.003994" c="0" />
            <distortion model="ptlens" focal="64" a="0" b="0.004329" c="0" />
            <distortion model="ptlens" focal="70" a="0" b="0.006728" c="0" />
        </calibration>
    </lens>

    <lens>
        <maker>Sigma</maker>
        <model>Sigma 28-70mm f/2.8 EX DG</model>
        <mount>Sigma</mount>
        <mount>Canon EF</mount>
        <mount>Nikon F AF</mount>
        <mount>Pentax KAF</mount>
        <cropfactor>1.0</cropfactor>
        <calibration>
            <distortion model="ptlens" focal="28" a="0.01508" b="-0.036446" c="0" />
            <distortion model="ptlens" focal="30" a="0.01328" b="-0.02956" c="0" />
            <distortion model="ptlens" focal="34" a="0.001964" b="-0.003604" c="0" />
            <distortion model="ptlens" focal="40" a="0.006628" b="-0.009598" c="0" />
            <distortion model="ptlens" focal="45" a="0.004477" b="-0.003544" c="0" />
            <distortion model="ptlens" focal="50" a="0" b="0.006595" c="0" />
            <distortion model="ptlens" focal="60" a="0" b="0.0078" c="0" />
            <distortion model="ptlens" focal="70" a="0" b="0.008656" c="0" />
        </calibration>
    </lens>

    <lens>
        <maker>Sigma</maker>
        <model>Sigma 28-300mm f/3.5-6.3 Macro ASP IF</model>
        <mount>Sigma</mount>
        <mount>Canon EF</mount>
        <mount>Nikon F AF</mount>
        <mount>Pentax KAF</mount>
        <cropfactor>1.5</cropfactor>
        <calibration>
            <distortion model="ptlens" focal="28" a="0" b="-0.009837" c="-0.008234" />
            <distortion model="ptlens" focal="34" a="0" b="-0.004678" c="0.000517" />
            <distortion model="ptlens" focal="55" a="0" b="0.005687" c="-0.005159" />
            <distortion model="ptlens" focal="75" a="0" b="0.008223" c="-0.004279" />
            <distortion model="ptlens" focal="100" a="0" b="0.005137" c="0.00146" />
            <distortion model="ptlens" focal="135" a="0" b="0.00675" c="-0.000965" />
            <distortion model="ptlens" focal="200" a="0" b="0.007188" c="-0.003544" />
            <distortion model="ptlens" focal="300" a="0" b="0.00471" c="8.5e-05" />
        </calibration>
    </lens>

    <lens>
        <maker>Sigma</maker>
        <model>Sigma 50-300mm f/4-6.3 EX DG/HSM</model>
        <mount>Sigma</mount>
        <mount>Canon EF</mount>
        <mount>Nikon F AF</mount>
        <mount>Pentax KAF</mount>
        <cropfactor>1.5</cropfactor>
        <calibration>
            <distortion model="ptlens" focal="50" a="0" b="-0.00059" c="0" />
            <distortion model="ptlens" focal="72" a="0" b="0.004149" c="0" />
            <distortion model="ptlens" focal="100" a="0" b="0.005115" c="0" />
            <distortion model="ptlens" focal="135" a="0" b="0.005001" c="0" />
            <distortion model="ptlens" focal="195" a="0" b="0.004957" c="0" />
            <distortion model="ptlens" focal="270" a="0" b="0.004639" c="0" />
            <distortion model="ptlens" focal="320" a="0" b="0.005982" c="0" />
            <distortion model="ptlens" focal="420" a="0" b="0.005397" c="0" />
            <distortion model="ptlens" focal="500" a="0" b="0.004857" c="0" />
        </calibration>
    </lens>

    <lens>
        <maker>Sigma</maker>
        <model>Sigma 55-200mm f/4-5.6 DC</model>
        <mount>Sigma</mount>
        <mount>Canon EF</mount>
        <mount>Nikon F AF</mount>
        <mount>Pentax KAF</mount>
        <cropfactor>1.6</cropfactor>
        <calibration>
            <distortion model="ptlens" focal="55" a="0" b="-0.004366" c="0" />
            <distortion model="ptlens" focal="59" a="0" b="-0.002076" c="0" />
            <distortion model="ptlens" focal="67" a="0" b="0.000422" c="0" />
            <distortion model="ptlens" focal="72" a="0" b="0.002204" c="0" />
            <distortion model="ptlens" focal="78" a="0" b="0.004926" c="0" />
            <distortion model="ptlens" focal="94" a="0" b="0.0063" c="0" />
            <distortion model="ptlens" focal="112" a="0" b="0.007639" c="0" />
            <distortion model="ptlens" focal="147" a="0" b="0.007139" c="0" />
            <distortion model="ptlens" focal="200" a="0" b="0.008176" c="0" />
        </calibration>
    </lens>

    <lens>
        <maker>Sigma</maker>
        <model>Sigma 70-300mm f/4-5.6 APO Macro Super II</model>
        <mount>Sigma</mount>
        <mount>Canon EF</mount>
        <mount>Nikon F AF</mount>
        <mount>Pentax KAF</mount>
        <cropfactor>1.6</cropfactor>
        <calibration>
            <distortion model="ptlens" focal="70" a="0.002522" b="-0.005913" c="0" />
            <distortion model="ptlens" focal="81" a="-0.000431" b="0.003404" c="0" />
            <distortion model="ptlens" focal="92" a="-0.001379" b="0.006159" c="0" />
            <distortion model="ptlens" focal="100" a="-0.001226" b="0.006912" c="0" />
            <distortion model="ptlens" focal="119" a="0.001445" b="0.002936" c="0" />
            <distortion model="ptlens" focal="133" a="0.000359" b="0.005212" c="0" />
            <distortion model="ptlens" focal="149" a="0.000193" b="0.005672" c="0" />
            <distortion model="ptlens" focal="168" a="0.000533" b="0.005172" c="0" />
            <distortion model="ptlens" focal="190" a="0.000317" b="0.005522" c="0" />
            <distortion model="ptlens" focal="214" a="-4.9e-05" b="0.005661" c="0" />
            <distortion model="ptlens" focal="238" a="-0.000247" b="0.005706" c="0" />
            <distortion model="ptlens" focal="263" a="0.000491" b="0.003667" c="0" />
            <distortion model="ptlens" focal="300" a="0.001061" b="0.001597" c="0" />
        </calibration>
    </lens>

    <lens>
        <maker>Sigma</maker>
        <model>Sigma 14mm f/2.8 EX</model>
        <mount>Sigma</mount>
        <mount>Canon EF</mount>
        <mount>Nikon F AF</mount>
        <mount>Pentax KAF</mount>
        <cropfactor>1.0</cropfactor>
        <calibration>
            <distortion model="ptlens" focal="14" a="0.031106" b="-0.059086" c="0" />
        </calibration>
    </lens>

    <lens>
        <maker>Sigma</maker>
        <model>Sigma 14mm f/3.5 EX</model>
        <mount>Sigma</mount>
        <mount>Canon EF</mount>
        <mount>Nikon F AF</mount>
        <mount>Pentax KAF</mount>
        <cropfactor>1.5</cropfactor>
        <calibration>
            <distortion model="ptlens" focal="14" a="0.013209" b="-0.036529" c="0" />
        </calibration>
    </lens>

    <lens>
        <maker>Sigma</maker>
        <model>Sigma 20mm f/1.8 EX DG</model>
        <mount>Sigma</mount>
        <mount>Canon EF</mount>
        <mount>Nikon F AF</mount>
        <mount>Pentax KAF</mount>
        <cropfactor>1.0</cropfactor>
        <calibration>
            <distortion model="ptlens" focal="20" a="0.034347" b="-0.066549" c="0" />
        </calibration>
    </lens>

    <lens>
        <maker>Sigma</maker>
        <model>Sigma 28mm f/1.8 EX DG</model>
        <mount>Sigma</mount>
        <mount>Canon EF</mount>
        <mount>Nikon F AF</mount>
        <mount>Pentax KAF</mount>
        <cropfactor>1.5</cropfactor>
        <calibration>
            <distortion model="ptlens" focal="28" a="0.002854" b="-0.010067" c="0" />
        </calibration>
    </lens>

    <lens>
        <maker>Sigma</maker>
        <model>Sigma 30mm f/1.4 EX DC HSM</model>
        <mount>Sigma</mount>
        <mount>Canon EF</mount>
        <mount>Nikon F AF</mount>
        <mount>Pentax KAF</mount>
        <cropfactor>1.5</cropfactor>
        <calibration>
            <distortion model="ptlens" focal="30" a="0.003926" b="-0.013819" c="0" />
        </calibration>
    </lens>

    <lens>
        <maker>Sigma</maker>
        <model>Sigma 50mm f/1.4 EX DG HSM</model>
        <mount>Canon EF</mount>
        <mount>Nikon F AF</mount>
        <cropfactor>1.0</cropfactor>
        <calibration>
            <distortion model="ptlens" focal="50" a="-0.008" b="0.012" c="-0.002" />
        </calibration>
    </lens>

</lensdatabase>
