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 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/53C6D9E6.7030506%40gmail.com.
For more options, visit https://groups.google.com/d/optout.
