Hi David and thank you for your email. OK, fair enough. If it is NOT my fake focal length, so what causes the problem?
I had not enough time to closely check how my lens works when I change the focus, I might be not right. I will do better tests soon, however how to explain why "focal length" is different on image 1 with my girlfriend here: http://www.rozenek.com/images/forum/pic1.jpg and without my girlfriend: http://www.rozenek.com/images/forum/pic2.jpg Both are in full size, the same size 6016 x 4016, both taken from tripod without moving it, taken in just a few seconds different time. Magic? :) I am saying again - maybe I am not right, but where is the problem? Because before everybody said it was a problem with my not perfect nodal point. Then I was asking everybody why then not very well stitched places are so far away from my camera? Everybody said it was a problem with a nodal point so I just believed them. Now I am in doubt again and the pictures from attached links are kind of the proof! (I hope) Thank you gain for your email!!! -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of David W. Jones Sent: 16 July 2014 21:01 To: [email protected] Subject: Re: [hugin-ptx] Re: Can I automatically improve stitching? Hmm, I've never seen autofocus change magnification on my Minolta 7D. Magnification is a function of focal length; focus is not. But if you're using a large opening and have little depth of field, autofocus can definitely mess up a panorama! On 07/12/2014 06:57 AM, Pawel Rozenek wrote: > Hi Guys, > > I know what was wrong with my panorama!!! :) > > Autofocus caused the problem. When it slightly changes the distance, > also it slightly changes the magnification :) > > *From:*[email protected] [mailto:[email protected]] > *On Behalf Of *panostar > *Sent:* 15 June 2014 08:18 > *To:* [email protected] > *Subject:* [hugin-ptx] Re: Can I automatically improve stitching? > > Pawel, Your images stitch quite well, though some evidence of parallax > problems can be seen. See this animated gif: > http://ge.tt/1vEx1Wk1/v/0?c . This indicates that the setup of your > panorama head could be improved. > > While a good stitch was obtained using all the supplied images, half > of them can be discarded as the remainder have adequate overlap. > There's a > 6000x3000 jpeg at http://ge.tt/4lsO3Uk1 made from 18 images . > Actually, I did this with PTGui, but Hugin should give a similar > result, given the same amount of care in the assignment of control points etc. > > John > > > > On Saturday, June 14, 2014 10:26:00 AM UTC+1, Pawel Rozenek wrote: > > Hi Daniel, > > I really apologise -I missed your email. > > I uploaded my panorama files together with hugin files here: > http://www.rozenek.com/temp/panorama.zip (300MB) > > If you have a spare time - you can look at this. But please note this > is not a very important panorama for me. I just got the problem and I > try to understand why. > > Possibly you all have a right - my nodal point was not perfect. I just > do not understand why it affected so far parts of the picture :) > > Thank you Daniel and everybody who tried to help. > > Pawel Rozenek > > > > On Monday, 9 June 2014 00:33:13 UTC+1, dkloi wrote: > > It could be that your no-parallax-point is not set correctly but more > likely is that your workflow in setting the control points and > optimising the geometry is the real issue. I once took a whole batch > of panos with the NPP 10mm offset to the right (I forgot I'd omitted > the camera mounting plate on the NN3MkII when taking them) but was > still able to salvage the final spherical panoramas by a lot of > tweaking of the control points and arcane trickery, > https://www.360cities.net/image/glasgow-science-centre-dusk was one of > them. If you could post the source imagery, I could try stitching it > in Hugin to see if there are problems with the geometry. > > Daniel. > > On Sunday, 8 June 2014 15:50:30 UTC+1, Pawel Rozenek wrote: > > Hi John, > > Thank you for your reply. Well, this panorama is only a example and > ONLY one reason why I posted my question here was I' like to inform > the owner of the Hugin software about possible problem. However, if > anybody says it is my nodal point problem - I do not blame Hugin than > :) Thank you :) > > On Saturday, 7 June 2014 19:46:05 UTC+1, panostar wrote: > > There are dozens of stitching errors in the Norwich panorama, both at > the horizontal level and the zenith. It's possible that the zenith > errors, despite being further away, are not unconnected with the > efforts made to align the images lower down. If you care to make a > set of images available (half size jpegs would do), maybe we could > give a more informed opinion about what's going on. > > John > > On Saturday, June 7, 2014 9:54:52 AM UTC+1, Pawel Rozenek wrote: > > Hi Guys, > > A few months ago we had a conversation about a stitching problem in my > panorama. > > The print screen from my panorama is here: > > http://www.rozenek.com/images/forum/hugin-problem.jpg > > and the panorama is here: > http://www.rozenek.com/royal-arcade-norwich-panorama-360-x-180/ > > Despite having a proper u-bracket for my camera we have found that the > problem was created by a ball head in my tripod which was not in a > perfect vertical position. > > IT WAS FAIR ENOUGH :) so I assumed it was my fault and that's all :) > > However, just a few days I realised (my brain works slowly :P ) that > the parallax error appears on the roof, near the zenith point (see link). > Zenith is miles away from my tripod so I would like to raise the > question again - how is it possible that the not perfect nodal point > affects zenith? > > I am not saying you were not right. I just do not get it why not > perfect nodal point affects zenith! > > Any clues? :) > > And thank you again. -- David W. Jones [email protected] wandering the landscape of god http://dancingtreefrog.com -- A list of frequently asked questions is available at: http://wiki.panotools.org/Hugin_FAQ --- You received this message because you are subscribed to a topic in the Google Groups "hugin and other free panoramic software" group. To unsubscribe from this topic, visit https://groups.google.com/d/topic/hugin-ptx/neh7DKLYD7g/unsubscribe. To unsubscribe from this group and all its topics, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/hugin-ptx/53C6D9E6.7030506%40gmail.com. For more options, visit https://groups.google.com/d/optout. --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com -- 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/000001cfa132%24a2a71790%24e7f546b0%24%40googlemail.com. For more options, visit https://groups.google.com/d/optout.
