heya, i had one or two shots in the past where i missed this feature, too (have an 8mm peleng fisheye). in my case it was mainly about straightening horizon lines or similar. i ended up doing these in hugin and forgot about it. other than that i think this is a very reasonable feature request.
to do it the clean way however, i think this should be part of the lensfun library (or else we would probably end up duplicating all the undistortion code.. because you want to shift center in spherical/angular domain, right?). cheers, jo On Sat, Dec 29, 2018 at 8:31 PM Moritz Moeller <virtualr...@gmail.com> wrote: > > I recently started using very shot fisheye lenses (12-14mm) for event > photography. The idea is that you will never catch the right > angle/composition/moment all together at a wedding/party etc. > > Afterwards, you undistort the images and crop to the region with the > best composition, to obtain a FOV more like 35mm or 50mm. > > The problem is that you also want to shift the image around in the > distorted space before undistorting & cropping. Not after. > > Basically change the center, before undistorting so you don't get the > extreme proportional changes at the edges of the image (which may, > because of the region you crop to, end up much closer to the center > afterwards). > > Would it make sense/be possible to add a horizontal/vertical shift to > the lens undistort module for this? > If so, I'd create a feature request in the tracker with some example RAWs. > > > Beers, > > .mm > ___________________________________________________________________________ > darktable developer mailing list > to unsubscribe send a mail to darktable-dev+unsubscr...@lists.darktable.org > ___________________________________________________________________________ darktable developer mailing list to unsubscribe send a mail to darktable-dev+unsubscr...@lists.darktable.org
