#118 Tamron SP 35mm f/1.8 Di VC USD F012

[Christian Ried]

Hi,

I made the calibration below for the Tamron SP 35mm f/1.8 Di VC USD F012 to correct for barrel distorion. I used a full frame Nikon D810 camera. I checked the effect by editing my RawTherapee 5.4 lensfun database. I hope you will find that useful to incorporate into your permanent database. In case of questions, please don't hesitate to contact me. Best wishes,

Christian

<lens>
    <maker>Tamron</maker>
    <model>Tamron SP 35mm f/1.8 Di VC USD F012</model>
    <mount>Canon EF</mount>
    <mount>Nikon F AF</mount>
    <mount>Sony Alpha</mount>
    <cropfactor>1.0</cropfactor>
    <calibration>
        <distortion model="poly3" focal="35" k1="-0.005" />
    </calibration>
</lens>

[Christian Ried]

I updated the distortion model to the more elaborate ptlens model. This gives an even better result:

<lens>
    <maker>Tamron</maker>
    <model>Tamron SP 35mm f/1.8 Di VC USD F012</model>
    <mount>Canon EF</mount>
    <mount>Nikon F AF</mount>
    <mount>Sony Alpha</mount>
    <cropfactor>1.0</cropfactor>
    <calibration>
        <distortion model="ptlens" focal="35" a="0.0032" b="-0.01061" c="0.00557" />
    </calibration>
</lens>

[seebk]

Thanks Christian, I have added your profile to the database.