Jawed said:
The settings I used are different from what I've advised in the past. Accidentally I discovered that setting the lens type to "circular fisheye" produces a preferable projection than the oft-used "stereographic" lens type (I certainly have specified stereographic in the past and I have a gallery of pix that are based on stereographic). This then requires a longer focal length. 9.5mm in this case (a figure I derived from my own lens, and which probably varies with lens). The focal length is worth experimentation.
The APS-C Samyang 8mm is supposedly close to stereographic, but no lens has a "perfect" projection. There is a particular "Thoby" projection in Hugin made specifically for the Nikkor 10.5mm.
If one makes a good pano set of images (preferably on tripod with a pano head, rotation around the right point, static scene with enough "features" all around), Hugin is able to optimize lens distortion parameters.
Member said:
I then used Equirectangular Panini as the re-projection.
Sometimes it is worth trying many output projections, as there is no perfect solution for any scene, especiall those with both straight lines and round objects. Unfortunately often no projection seems to work for some scenes, hehe. Sometimes it is worth trying to adjust the horizon.
