Digikam always uses crop factor of -1.0 (1.0 effectively) in lens correction. For cropped cameras this gives surprising results. Patch will be added. Reproducible: Always
Created attachment 76254 [details] Patch to fix the problem
It looks to me that this patch should fix bugs added to 'blocks' list. They're all similar, wrong corrections for cropped cameras.
Git commit 8b3eb6f0b498ae11729e0880e7ac0673b2dd2bd8 by Gilles Caulier. Committed on 07/01/2013 at 11:16. Pushed by cgilles into branch 'master'. Apply patch #76254 from Roman I Khimov about lensfun interface which don't mangle cropFactor if it's set. This behaviour was introduced by polish commit bebef401e147a00f859cb81774f8498a0623eee5. With this branch present we always get cropFactor of -1.0 in LensFunFilter::filterImage() and given that lensfun library just uses crop factor of 1 which leads to obviously wrong calculations for cropped cameras. Related: bug 253941, bug 266204, bug 267613, bug 281783, bug 284708 FIXED-IN: 3.0.0 CCMAIL: rik@osrc.info M +0 -4 libs/dimg/filters/lens/lensfuncameraselector.cpp http://commits.kde.org/digikam/8b3eb6f0b498ae11729e0880e7ac0673b2dd2bd8
Git commit 613d004121682d122e9ea7fd9041a7bbc49acb89 by Gilles Caulier. Committed on 07/01/2013 at 11:34. Pushed by cgilles into branch 'master'. Apply patch #76256 from Roman I Khimov to use crop factor from camera, not from lens data. Lens crop factor in DB only tells us which crop factor was used for lens calibration data, but it has nothing to do with shots made on random user's camera. So the default behaviour should be to use camera's crop factor and only fallback to lens data if there in no data present for camera. As "this should not happen" it's appropriate to spit out some debug message in this case. Ref: http://lensfun.berlios.de/manual/el_lens.html Ref: http://lensfun.berlios.de/manual/el_camera.html Related: bug 312766, bug 253941, bug 266204, bug 267613, bug 281783, bug 284708 FIXED-IN: 3.0.0 CCMAIL: roman@khimov.ru M +2 -1 libs/dimg/filters/lens/lensfuncameraselector.cpp M +1 -1 libs/dimg/filters/lens/lensfuniface.cpp http://commits.kde.org/digikam/613d004121682d122e9ea7fd9041a7bbc49acb89
Git commit 70cf9beaac9996c219f988d8ae74d75dc253c0ad by Gilles Caulier. Committed on 07/01/2013 at 11:39. Pushed by cgilles into branch 'master'. Apply patch #76255 from Roman I Khimov to don't pass crop factor as scale factor to lensfun. Sixth parameter to Initialize() is actually a scale factor which has nothing in common with crop factor. I think it's safe to assume that we want no scaling from lensfun and thus use the value of one. Ref: http://lensfun.berlios.de/manual/structlfModifier.html Related: bug 312765, bug 253941, bug 266204, bug 267613, bug 281783, bug 284708 FIXED-IN: 3.0.0 CCMAIL: roman@khimov.ru M +1 -1 libs/dimg/filters/lens/lensfunfilter.cpp http://commits.kde.org/digikam/70cf9beaac9996c219f988d8ae74d75dc253c0ad
Patch applied, thanks, closing.