2013/5/17 <[email protected]>:
> I found that the Olympus base curve (as well as the alternate) produced a
> tone curve not remotely resembling that found in the jpeg output (or the
> preview embedded in RAW files) of the Olympus XZ-1, so I created a curve
> which gets pretty close, and I'm attaching it for anyone else to use or
> improve upon. Cheers.
I only tried it now. It seems to give very good results - thanks for
working on that. I'd also recommend using darktable's daylight or
cloudy white balance since XZ-1 tends to skew towards red in a weird
way. In return I'm sharing a lens profile for XZ-1 (you have to pick
Olympus -> Standard manually). Have fun.
<lensdatabase>
<mount>
<name>olympusxz1</name>
<compat>Generic</compat>
</mount>
<camera>
<maker>OLYMPUS IMAGING CORP.</maker>
<maker lang="en">Olympus</maker>
<model>XZ-1</model>
<mount>olympusxz1</mount>
<cropfactor>4.68</cropfactor>
</camera>
<lens>
<maker>Olympus</maker>
<model>Standard</model>
<mount>olympusxz1</mount>
<cropfactor>4.68</cropfactor>
<calibration>
<distortion model="ptlens" focal="6" a="0.01604" b="-0.05047" c="0" />
<distortion model="ptlens" focal="6.5" a="0.01062" b="-0.03568" c="0" />
<distortion model="ptlens" focal="6.9" a="0.01005" b="-0.032" c="0" />
<distortion model="ptlens" focal="7.4" a="0.0093" b="-0.02656" c="0" />
<distortion model="ptlens" focal="8.2" a="0.0054" b="-0.01759" c="0" />
<distortion model="ptlens" focal="9" a="0.0039" b="-0.01169" c="0" />
<distortion model="ptlens" focal="9.9" a="0.00681" b="-0.01404" c="0" />
<distortion model="ptlens" focal="10.8" a="0.00403" b="-0.00779" c="0" />
<distortion model="ptlens" focal="11.8" a="0.00045" b="-0.00198" c="0" />
<distortion model="ptlens" focal="12.9" a="-0.00279" b="0.00569" c="0" />
<distortion model="ptlens" focal="14.1" a="0.00656" b="-0.01053" c="0" />
<distortion model="ptlens" focal="15.3" a="0.00245" b="-0.00075" c="0" />
<distortion model="ptlens" focal="16.6" a="0.00104" b="0.00264" c="0" />
<distortion model="ptlens" focal="18.2" a="0.00146" b="0.00052" c="0" />
<distortion model="ptlens" focal="19.8" a="0.00166" b="0.00164" c="0" />
<distortion model="ptlens" focal="21.6" a="0.00064" b="0.00348" c="0" />
<distortion model="ptlens" focal="24" a="0.00074" b="0.0032" c="0" />
</calibration>
</lens>
</lensdatabase>
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