Hello,
I use a Sony A7 with a Canon FD 50mm 1:1.4 (+ adaptator), this is an
old/manual lens so I have to manually specify the lens (with exiv2) in my
RAW files:
$ exiv2 -M "set Exif.Photo.LensModel Ascii Canon FDn 50mm 1:1.4" mo *.arw
$ exiv2 -u -pa 20150106_0001.arw
Exif.Photo.LensModel Ascii 21 Canon FDn 50mm
1:1.4
The lens is listed here in LensFun:
$ sed -n '1869,1899p' /usr/share/lensfun/slr-canon.xml
<maker>Canon</maker>
<model>Canon FDn 50mm 1:1.4</model>
<focal value="50" />
<aperture max="22" min="1.4" />
<mount>Canon FD</mount>
<cropfactor>2.0</cropfactor>
<calibration>
<distortion a="-0.000919817" b="0.00112022" c="-0.00289404"
focal="50" model="ptlens" />
<tca bb="0.0000216" br="-0.0000338" focal="50" model="poly3"
vb="0.9998764" vr="1.0002152" />
<vignetting aperture="1.4" distance="0.45" focal="50"
k1="-0.2747" k2="-0.1546" k3="0.1527" model="pa" />
<vignetting aperture="1.4" distance="1" focal="50" k1="-0.5692"
k2="0.3348" k3="-0.1042" model="pa" />
<vignetting aperture="1.4" distance="3" focal="50" k1="-0.6686"
k2="0.5132" k3="-0.2054" model="pa" />
<vignetting aperture="1.4" distance="1000" focal="50"
k1="-0.6918" k2="0.5512" k3="-0.2278" model="pa" />
<vignetting aperture="2" distance="0.45" focal="50"
k1="-0.0668" k2="0.0029" k3="-0.0171" model="pa" />
<vignetting aperture="2" distance="1" focal="50" k1="-0.0725"
k2="-0.0250" k3="0.0104" model="pa" />
<vignetting aperture="2" distance="3" focal="50" k1="-0.0748"
k2="-0.0428" k3="0.0297" model="pa" />
<vignetting aperture="2" distance="1000" focal="50"
k1="-0.0782" k2="-0.0459" k3="0.0329" model="pa" />
<vignetting aperture="2.8" distance="0.45" focal="50"
k1="-0.0604" k2="-0.0194" k3="0.0045" model="pa" />
<vignetting aperture="2.8" distance="1" focal="50" k1="-0.0732"
k2="-0.0241" k3="0.0120" model="pa" />
<vignetting aperture="2.8" distance="3" focal="50" k1="-0.0832"
k2="-0.0198" k3="0.0121" model="pa" />
<vignetting aperture="2.8" distance="1000" focal="50"
k1="-0.0824" k2="-0.0342" k3="0.0223" model="pa" />
<vignetting aperture="4" distance="0.45" focal="50"
k1="-0.0694" k2="-0.0016" k3="-0.0078" model="pa" />
<vignetting aperture="4" distance="1" focal="50" k1="-0.0828"
k2="0.0019" k3="-0.0081" model="pa" />
<vignetting aperture="4" distance="3" focal="50" k1="-0.0919"
k2="-0.0002" k3="-0.0022" model="pa" />
<vignetting aperture="4" distance="1000" focal="50"
k1="-0.0919" k2="-0.0064" k3="0.0028" model="pa" />
<vignetting aperture="22" distance="0.45" focal="50"
k1="-0.1151" k2="0.1018" k3="-0.0809" model="pa" />
<vignetting aperture="22" distance="1" focal="50" k1="-0.1117"
k2="0.0668" k3="-0.0536" model="pa" />
<vignetting aperture="22" distance="3" focal="50" k1="-0.1539"
k2="0.1340" k3="-0.0892" model="pa" />
<vignetting aperture="22" distance="1000" focal="50"
k1="-0.1587" k2="0.1348" k3="-0.0874" model="pa" />
</calibration>
</lens>
The lens name appears fine in darktable image information panel however the
camera/lens is not found:
I don't know if the problem is in my tag, in LensFun or darktable (1.6.1).
Here
<https://mega.co.nz/#%21YdslUboA%21d4uoBwBC9apIgpeBc3nfRsmYAqurZqCPkuKUGt9mGKk>
is an example RAW file (without the tag applied).
After applying the manual lens tag darktable is unable to read the white
balance information from the tags.
Bye
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