Hello, lensfun-users!
I have a question about the TCA correction in lensfun: I use darktable,
and it seems the TCA correction is not working as I expect: see the
attached screenshots - both are from darktable with the same raw file:
the first one is with the lens correction switched off,
and the second one is with the correction applied. As you can see,
neither has the chromatic aberration fully removed. And since in both
images the colors are different, it can be that the TCA correction
is overdone.
Is it possible that the lens profile of this lens in the
lensfun database is wrong?
The original raw is available here:
http://www.fi.muni.cz/~kas/tmp/DSC00090.ARW
Some parts of the lensfun profile of this lens are indeed
applied correctly - for example, the lens distortion is perfectly corrected
in the above picture.
I am new to lensfun and to the raw files handling in Linux,
so I am not even sure whether to post this to the lensfun list or to
the darktable list. I don't know how to verify it with lensfun only.
Thanks in advance,
-Yenya
--
| Jan "Yenya" Kasprzak <kas at {fi.muni.cz - work | yenya.net - private}> |
| New GPG 4096R/A45477D5 -- see http://www.fi.muni.cz/~kas/pgp-rollover.txt |
| http://www.fi.muni.cz/~kas/ Journal: http://www.fi.muni.cz/~kas/blog/ |
Smart data structures and dumb code works a lot better
than the other way around. --Eric S. Raymond
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