I can't say for sure. I'm a DT newbie. But consider: You correct for something. Any cropping is going to take off some good pixels as well as some blank. The after corrected image isn't rectangular. But the shape you eventually want to have may include some of those trimmed bits.
I've never had this with lens corrections. I don't own any of the really weird lenses with serious corrections. But I have encountered this with perspective correction, and with rotate. Regards Sherwood On Sat, 11 Jan 2020 at 10:35, Michael Staats <[email protected]> wrote: > On 11/01/2020 18:28, Michael Staats wrote: > [ ... ] > > > I now have some curved black borders around the visible image, obviously > > the image is corrected for distortion, but it's not auto-cropped to > > remove the artefacts from distortion correction. If I switch off > > lens-correction, no black borders any more -- but also no lens > > correction, obviously ;-) > > > > Is this maybe an issue with lensfun (not being updated properly to the > > expected version in my system), or is it a dt issue? I'm pretty sure I > > did not have the issues with dt 2.x on Ubuntu 16.04. > > Ok, here's what I found just now (sorry for reply to self): > > If I click on "auto-scale" (icon beside "scale"), the scale changes from > 1.000 to 1.015, which is exactly what is required. > > Any idea why this is not happening in dt 3.0 automatically? > > Will it help if I diff the xmp files (2.6 one from backup, and current > 3.0 one)? > > Regards, > Michael > > -- > Michael Staats > [email protected] > > ____________________________________________________________________________ > darktable user mailing list > to unsubscribe send a mail to > [email protected] > > ____________________________________________________________________________ darktable user mailing list to unsubscribe send a mail to [email protected]
