On 07/08/2019 22:16, jys wrote:
On Wed, Aug 7, 2019, at 04:57, Romano Giannetti wrote:
I was trying to use Jupyter to do a bit of statistics on my photos
(basically --- I'd like to find the distribution of focal lengths
I use), but I found a problem. I extracted the library.db to a csv
file, and I found that the crop of the photos I took with my
Olympus E-M1 have the "crop" column set to zero (it should be 2, I
think). For my other cameras it is ok.
I'm not sure where, if anywhere, this value is actually used by
darktable other than for display. For the lens correction module,
which needs this information, the crop factor is taken from the
LensFun database, so you probably don't need to worry, FWIW.
Thanks for the info --- I checked the lens correction and it seems ok,
so it's just a glitch... I fixed it in Jupyter. Still a bit strange, no?
Do you think I should raise a bug report?
Romano
PD I did it --- it was a "advise" from Michael Johnston of TOP for
choosing your next lens...
If you're interested you can see it here:
https://bit.ly/2KxMAZj
--
Romano Giannetti
http://www.rgtti.com/
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