I recently played at getting VERY close shots with my Canon A630, which will focus down to 1cm.
All (eventually... :-) went well, but the resulting shot has savage barrel distortion: http://i48.photobucket.com/albums/f234/bugbear33/photo_tech/rule_close.jpg I normally correct my 35mm images with some distortion numbers saved from a large, multishot panorama. But they don't appear to be applicable to this close up shot. So I pulled the image into Hugin, set a few normal control points, then set up control points on two straight lines (top and bottom edges of the main subject). Optimisation for (a,b,c) went well. But when I use stitch preview, rectilinear projection does NOT give me the nice corrected result I desire; It has severe pincushion distortion. Other projections give me a "squarer" result; e.g. Equirectangular looks "ok". I *thought* I should just be mapping from a rectilinear lens (with distortions) to a similar rectilinear projection (with distortions corrected). What am I doing wrong? BugBear --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "hugin and other free panoramic software" group. A list of frequently asked questions is available at: http://wiki.panotools.org/Hugin_FAQ To post to this group, send email to hugin-ptx@googlegroups.com To unsubscribe from this group, send email to hugin-ptx-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/hugin-ptx -~----------~----~----~----~------~----~------~--~---
