====== Canon EF 50mm f/1.8 MkII Lens ======

{{:en:photo:equipment:canon-50mm-f1.8.jpg?400&direct|}}

===== LensFun Calibration Data =====

This is my [[http://lensfun.berlios.de/|LensFun]] entry for this lens.  The distortion values listed are the default values that are included with the library.  Unfortunately, following the [[http://lensfun.berlios.de/lens-calibration/lens-calibration.html|lens calibration guide]], I was unable to get ''tca_correct'' to output anything meaningful.  Most of the values were far off the scale that ufraw could deal with (ufraw/lensfun wants +/- 0.01 but I was geting +/- 0.5 or more).  I just ended up manually selecting values for first order correction, producing a much better result than I could get from ''tca_correct''.  This lens did not appear to need any TCA correction anyway, interestingly enough.  

<code>
    <lens>
        <maker>Canon</maker>
        <model>Canon EF 50mm f/1.8 MkII</model>
        <mount>Canon EF</mount>
        <cropfactor>1.3</cropfactor>
        <calibration>
            <distortion model="ptlens" focal="50" a="-0.00016" b="-0.003951" c="0" />
            <!-- manually selected compensation values -->
            <tca model="linear" focal="50" kr="1.000000" kb="1.000000" />
        </calibration>
    </lens>
</code>

===== Links =====

  * [[wp>Canon EF 50mm lens]]
  * [[http://www.usa.canon.com/cusa/consumer/products/cameras/ef_lens_lineup/ef_50mm_f_1_8_ii|canon.com: Canon EF 50mm f/1.8 II]]