On 05/09/14 16:48, ST wrote:
> Apologies if this has been covered elsewhere. I have recently purchased an
> EF-S mount Sigma 17-70mm f/2.8-4 DC Macro OS
> HSM (2012 "contemporar" version) which I use with a Canon EOS 700D.
> When I import a Raw .CR2 file into Darktable and attempt to use lens
> correction, I get an error message stating that the
> lens is unknown.
> If I hunt through the lensfun list of known lenses, the Sigma 17-70mm f/2.8-4
> DC Macro OS HSM is covered from version 1.523.
> Does Darktable use this library directly? If so, If I download the latest
> snapshop, rebuild and reinstall, will
> Darktable then have the ability to correct the lens distortion?
Should do, yes. You should also be able to avoid having to rebuild lensfun by
adding the XML entry for your lens to:
~/.local/share/lensfun/<lensname>.xml
The contents of which should look something like:
<lensdatabase>
<lens>
<maker>Sigma</maker>
<model>Sigma 17-70mm f/2.8-4 DC Macro OS HSM</model>
...
</lens>
</lensdatabase>
Regards,
Rob
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