Am 03.04.2014 14:33, schrieb Torsten Bronger: > AFAIKS, everything is fine. Hugin's calculations are precise. The > only issue is that Hugin defines a focal length different from the > one that an optics textbook would define, that's all.
Optics textbook definitions are simplified, they deal with ideal lenses. Real lenses suffer from distortions which effectively result in a different magnification throughout the image (modeled by the hugin / panotools distortion formula). F.e. higher magnification in the image center means barrel distortion. Focal length and magnification are simply related, so there is no precise single focal length for most real life lenses. This is most significant for fisheye lenses. The popular Samyang 8mm lens f.e. is even marketed as different focal length. You only can give an approximate value after you estimated the mapping formula: http://michel.thoby.free.fr/SAMYANG/Early%20test%20report.html -- Erik Krause http://www.erik-krause.de -- A list of frequently asked questions is available at: http://wiki.panotools.org/Hugin_FAQ --- You received this message because you are subscribed to the Google Groups "hugin and other free panoramic software" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/hugin-ptx/534330D7.9050703%40gmx.de. For more options, visit https://groups.google.com/d/optout.
