[Digikam-users] Lensfun -- most cameras and lenses missing

Philip Johnsson philip.johnsson at gmail.com
Tue Nov 1 13:08:40 GMT 2011

Sorry, disregard my latest post. Missed that this was about lensfun and
lens correction and not exiv2 and meta data. With meta data and lens ID the
above comment is true.

With lensfun and lens correction there is an other database. Noticed that
my Tamron 17-50/2.8 isn't in the lensfun database so I will contribute the
correction data using Hugin to lensfun when I get time this weekend.

On Nov 1, 2011 2:03 PM, "Philip Johnsson" <philip.johnsson at gmail.com> wrote:

> It's more likely that you use a lens that's not in the exiv2 database. Can
> be that you got a new batch of the lens that have a new ID that exiv2
> doesn't recognizes. Check which lens ID the exiv2 tool show you from
> command line. Is OpenSuse using the latest exiv2 0.22? It contains the
> latest lens database.
> If that doesn't work make a bug report to the exiv2 team with an example
> image that have meta data in the image with the unsupported lens ID. I did
> so recently with my Tamron 17-50/2.8 with Nikon mount that was in a new
> batch.
> /Philip
> On Nov 1, 2011 8:44 AM, "Photonoxx" <photonoxx at free.fr> wrote:
>> I just make the a test, I'm on Opensuse 11.04 and KDE47 stable repository
>> and things seems to be ok here. My main lens still not here (sigma 17-70mm)
>> but it's due to the fact it is not here I think, since I see a various
>> manufacturer and lens references (included Canon's ones).
>> Could be the matter in the packaging ?
>> Le Mon, 31 Oct 2011 23:10:37 +0100, Chris Dennis <cgdennis at btinternet.com>
>> a écrit:
>>  On 10/31/2011 09:41 PM, Gilles Caulier wrote:
>>>> 2011/10/31 Chris Dennis<cgdennis at btinternet.com**>:
>>>>> Hello Digikam people
>>>>> I've just installed Digikam on a new installation of ArchLinux.
>>>>> Everything
>>>>> is pretty much up to date -- Digikam is 2.2.0.
>>>>> Most of it works well, but the Lens Auto-Correction screen only lists
>>>>> a few
>>>>> cameras and lenses, nowhere near the whole list that I can see in the
>>>>> Lensfun xml files.  Strangely, the first time I try to use lens
>>>>> auto-correction, only Samsung cameras are listed; the second time, I
>>>>> see
>>>>> Fujifilm, Kodak, and Nikon too; with further attempts, no more cameras
>>>>> appear.  Which is a pity, because my camera is a Canon.
>>>>> On the console, I can see these error messages:
>>>>> digikam(976)/digikam (core) Digikam::DimgInterface::**getImg:
>>>>> d->image is NULL
>>>>> digikam(976)/digikam (core): ERROR: LensFun Interface Lens device is
>>>>> null.
>>>>> Googling on those hasn't turned up anything useful.
>>>>> It may be that I've got some libraries missing from ArchLinux.
>>>> No. lensfun (last code), is included in digiKam core. And yes, more
>>>> lens need to be added.
>>> Thanks for your reply, but I can see that /usr/share/apps/digikam/**lensfun/
>>> contains a big range of camera and lens definitions; slr-canon.xml contains
>>> my camera and my lens.  But only a few of those definitions show up in
>>> digikam.
>>> I know that digikam is using those files, because changes I make in the
>>> Samsung file show up in digikam.
>>> Aha!  That suggests a work-around.  If I copy the Canon camera and lens
>>> definitions that I need into the Samsung file, they show up and are
>>> automatically selected in digikam!  So now I can make progress and apply
>>> corrections to my photos.
>>> There's a bug in there somewhere though.
>>> cheers
>>> Chris
>> --
>> --
>> Nicolas Boulesteix
>> Photographe chasseur de lueurs
>> http://www.photonoxx.fr
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